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Full vulnerability report · 2026
CVE-2026-26154High confidence

Windows Server Update Service (WSUS) Tampering Vulnerability

Microsoft · Windows Server 2012

7.5HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:High, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 1.23% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Microsoft Windows Server 2012 and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 30 daysRemediation target: Within 180 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-22376

No EUVD known-exploited evidence

Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
7.5 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.

What

Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Input Validation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-20 ↗

CWE-20: Improper Input Validation. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-20
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-22376Official EUVD mapping

Improper input validation in Windows Server Update Service allows an unauthorized attacker to perform tampering over a network.

Official EUVD record ↗
BSI · German · WID-SEC-2026-1104Microsoft Windows: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Produkten ausnutzen, um seine Privilegien zu erhöhen, um Informationen offenzulegen, um Sicherheitsvorkehrungen zu umgehen, um beliebigen Programmcode auszuführen, um falsche Informationen darzustellen, um einen Denial of Service Angriff durchzuführen, und um einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260415Security Bulletin 15 April 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 15 April 2026, published on 15 April 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0442Multiples vulnérabilités dans Microsoft Windows

ft Windows CVE-2026-20806 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-20928 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-20930 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-23670 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-25184 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-25250 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26151 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26152 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26153 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26154 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26155 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26156 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26159 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26160 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26161 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26162 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26163 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26165 du 14 avril 2026 Bulletin de sécurité Microsoft Windows CVE-2026-26166 du 14 avri

Official advisory ↗
CSIRT Italia · Italian · aggiornamenti-mensili-microsoft-19Aggiornamenti Mensili Microsoft

nuova finestra - - CVE-2026-26171 : apre una nuova finestra - - CVE-2026-26170 : apre una nuova finestra - - CVE-2026-26169 : apre una nuova finestra - - CVE-2026-26168 : apre una nuova finestra - - CVE-2026-26167 : apre una nuova finestra - - CVE-2026-26166 : apre una nuova finestra - - CVE-2026-26165 : apre una nuova finestra - - CVE-2026-26163 : apre una nuova finestra - - CVE-2026-26162 : apre una nuova finestra - - CVE-2026-26161 : apre una nuova finestra - - CVE-2026-26160 : apre una nuova finestra - - CVE-2026-26159 : apre una nuova finestra - - CVE-2026-26156 : apre una nuova finestra - - CVE-2026-26155 : apre una nuova finestra - - CVE-2026-26154 : apre una nuova finestra - - CVE-2026-26153 : apre una nuova finestra - - CVE-2026-26152 : apre una nuova finestra - - CVE-2026-26151 : apre una nuova finestra - - CVE-2026-26149 : apre una nuova finestra - - CVE-2026-26143 : apre una nuova finestra - - CVE-2026-25184 : apre una nuova finestra - - CVE-2026-23670 : apre una nuova finestra - - CVE-2026-23666 : apre una nuova finestra - - CVE-2026-23657 : apre una nuova finestra - - CVE-2026-23653 : apre una nuova finestra - - CVE-2026-20945 : apre una nuova finestra - - CVE-2026-20930 : apre una nuova finestra - - CVE-2026-20928 : apre una nuova finestra - - CVE-2026-20806 : apre una nuova fi

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-012670マイクロソフトのMicrosoft Windows Server 2012等の複数製品における入力確認に関する脆弱性

Windows Server Update Serviceにおける不適切な入力検証により、認証されていない攻撃者がネットワーク上で改ざんを行うことが可能になる。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6760MS 4월 보안 위협에 따른 정기 보안 업데이트 권고

라이버(applockerfltr.sys) | CVE-2026-25184 | Applocker (applockerfltr.sys) Elevation of Privilege Vulnerability | | Microsoft PowerShell | CVE-2026-26143 | Microsoft PowerShell Security Feature Bypass Vulnerability | | 마이크로소프트 파워 앱 | CVE-2026-26149 | Microsoft Power Apps Security Feature Bypass Vulnerability | | Windows 원격 해고 | CVE-2026-26151 | Windows Remote Desktop Spoofing Vulnerability | | Windows 라이브러리 서비스 | CVE-2026-26152 | Windows Cryptographic Services Elevation of Privilege Vulnerability | | Windows EFS(암호화 파일 시스템) | CVE-2026-26153 | Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability | | Windows Server 업데이트 서비스 | CVE-2026-26154 | Windows Server Update Service Tampering Vulnerability | | Windows LSASS(로컬 보안 인증 하위 시스템 서비스) | CVE-2026-26155 | Windows Local Security Authority Subsystem Service (LSASS) Information Disclosure Vulnerability | | 역할: Windows Hyper-V | CVE-2026-26156 | Windows Hyper-V Remote Code Execution Vulnerability | | Windows 원격 데스크톱 라이선싱 서비스 | CVE-2026-26159 | Windows Remote Desktop Licensing Service Elevation of Privilege Vulnerability | | Windows 원격 데스크톱 라이선싱 서비스 | CVE-2026-26160 | Windows Remote Desktop Licensing Service Elevation of Privilege Vulnerability | | Windows 센서 데이터 서비스 | CVE-2026-26161 | Windows Sensor Data Service Elevation of Privilege

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0119Kwetsbaarheden verholpen in Microsoft Windows

Een kwaadwillende kan de kwetsbaarheden misbruiken om aanvallen uit te voeren die kunnen leiden tot de volgende categorieën schade: - Denial-of-Service (DoS) - Manipulatie van gegevens - Toegang tot gevoelige gegevens - Uitvoeren van willekeurige code (gebruikersrechten) - Verkrijgen van verhoogde rechten - Omzeilen van een beveiligingsmaatregel - Spoofing ``` Function Discovery Service (fdwsd.dll): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32087 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-32093 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-32086 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-32150 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Applocker Filter Driver (applockerfltr.sys): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-25184 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Kernel: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26179 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-26180 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32195 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-32215 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-32217 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-32218 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-26163 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Remote Procedure Call: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32085 | 5,50 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Windows Common Log File System Driver: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32070 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Microsoft Management Console: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27914 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Push Notification Core: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26167 | 8,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32158 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32159 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32160 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-26172 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Installer: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27910 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows File Explorer: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32081 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-32079 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-32084 | 5,50 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Windows Boot Manager: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26175 | 4,60 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows Boot Loader: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-0390 | 6,70 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows User Interface Core: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32165 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-27911 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32163 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32164 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Microsoft Windows Speech: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32153 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows USB Print Driver: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32223 | 6,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows COM: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-20806 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-32162 | 8,40 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Input-Output Memory Management Unit (IOMMU): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2023-20585 | 5,30 | | |----------------|------|-------------------------------------| Universal Plug and Play (upnp.dll): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32212 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-32214 | 5,50 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Windows Redirected Drive Buffering: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32216 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Virtualization-Based Security (VBS) Enclave: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-23670 | 5,70 | Omzeilen van beveiligingsmaatregel | | CVE-2026-32220 | 4,40 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows Active Directory: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-33826 | 8,00 | Uitvoeren van willekeurige code | | CVE-2026-32072 | 6,20 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| Windows Shell: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26165 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-26166 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-27918 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32202 | 4,30 | Voordoen als andere gebruiker | | CVE-2026-32151 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-32225 | 8,80 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows Server Update Service: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26154 | 7,50 | | | CVE-2026-26174 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-32224 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows TCP/IP: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27921 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-33827 | 8,10 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows Kernel Memory: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26169 | 6,10 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Windows BitLocker: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27913 | 7,70 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows GDI: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27931 | 5,50 | Toegang tot gevoelige gegevens | | CVE-2026-27930 | 5,50 | Toegang tot gevoelige gegevens | |----------------|------|-------------------------------------| Windows Kerberos: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27912 | 8,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows RPC API: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26183 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Ancillary Function Driver for WinSock: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32073 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-26168 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-26173 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-26177 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-26182 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-27922 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-33099 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-33100 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Remote Desktop Licensing Service: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26160 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-26159 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Snipping Tool: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32183 | 7,80 | Uitvoeren van willekeurige code | | CVE-2026-33829 | 4,30 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| Windows Local Security Authority Subsystem Service (LSASS): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26155 | 6,50 | Toegang tot gevoelige gegevens | | CVE-2026-32071 | 7,50 | Denial-of-Service | |----------------|------|-------------------------------------| Windows Cryptographic Services: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26152 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows WFP NDIS Lightweight Filter Driver (wfplwfs.sys): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27917 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Print Spooler Components: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-33101 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Projected File System: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27927 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-26184 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32069 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32074 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32078 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows LUAFV: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27929 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Universal Plug and Play (UPnP) Device Host: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27915 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-27919 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32075 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32156 | 8,40 | Uitvoeren van willekeurige code | | CVE-2026-27916 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-27920 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-27925 | 7,50 | Toegang tot gevoelige gegevens | | CVE-2026-32077 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Win32K - GRFX: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-33104 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Hello: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27906 | 4,40 | Omzeilen van beveiligingsmaatregel | | CVE-2026-27928 | 7,70 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows Cloud Files Mini Filter Driver: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27926 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Admin Center: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32196 | 6,10 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| Windows Win32K - ICOMP: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32222 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Remote Desktop Client: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32157 | 8,80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows WalletService: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32080 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Microsoft Windows Search Component: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27909 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Desktop Window Manager: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27924 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32152 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32154 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-27923 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32155 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows HTTP.sys: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-33096 | 7,50 | Denial-of-Service | |----------------|------|-------------------------------------| Windows Secure Boot: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-25250 | 6,00 | Omzeilen van beveiligingsmaatregel, | |----------------|------|-------------------------------------| Microsoft PowerShell: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26170 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Microsoft Windows: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32181 | 5,50 | Denial-of-Service | |----------------|------|-------------------------------------| Windows SSDP Service: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32082 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-32083 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-32068 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Client Side Caching driver (csc.sys): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26176 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Sensor Data Service: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26161 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Encrypting File System (EFS): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26153 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows TDI Translation Driver (tdx.sys): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27908 | 7,00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Storage Spaces Controller: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-27907 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32076 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Microsoft Brokering File System: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26181 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32219 | 7,00 | Verkrijgen van verhoogde rechten | | CVE-2026-32091 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows IKE Extension: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-33824 | 9,80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows Biometric Service: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32088 | 6,10 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows Advanced Rasterization Platform: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26178 | 8,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows OLE: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26162 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Recovery Environment Agent: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-20928 | 4,60 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows Speech Brokered Api: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32089 | 7,80 | Verkrijgen van verhoogde rechten | | CVE-2026-32090 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Container Isolation FS Filter Driver: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-33098 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Management Services: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-20930 | 7,80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Role: Windows Hyper-V: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26156 | 7,80 | Uitvoeren van willekeurige code | | CVE-2026-32149 | 7,30 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows Remote Desktop: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-26151 | 7,10 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| Microsoft Graphics Component: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2026-32221 | 8,40 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| ```

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 14 Apr 2026 · Last source change 25 Sept 2026, 17:24 UTC · CWE-20 · Improper Input Validation

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-22376
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceOther authority
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: removed remediation: acn.gov.it/aggiornamenti-mensili-microsoft-19.
    Before
    remediation: acn.gov.it/aggiornamenti-mensili-microsoft-19 · vendor advisory: msrc.microsoft.com/CVE-2026-26154
    After
    vendor advisory: msrc.microsoft.com/CVE-2026-26154
    secure@microsoft.com ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    6.2.9200.0 < 6.2.9200.26026; 6.3.9600.0 < 6.3.9600.23132; 10.0.14393.0 < 10.0.14393.9060; 10.0.17763.0 < 10.0.17763.8644 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Windows Server 2012: 6.2.9200.0 < 6.2.9200.26026; Windows Server 2012 (Server Core installation): 6.2.9200.0 < 6.2.9200.26026; Windows Server 2012 R2: 6.3.9600.0 < 6.3.9600.23132; Windows Server 2012 R2 (Server Core installation): 6.3.9600.0 < 6.3.9600.23132; Windows Server 2016: 10.0.14393.0 < 10.0.14393.9060; Windows Server 2016 (Server Core installation): 10.0.14393.0 < 10.0.14393.9060; Windows Server 2019: 10.0.17763.0 < 10.0.17763.8644; Windows Server 2019 (Server Core installation): 10.0.17763.0 < 10.0.17763.8644; Windows Server 2022: 10.0.20348.0 < 10.0.20348.5020; Windows Server 2022, 23H2 Edition (Server Core installation): 10.0.25398.0 < 10.0.25398.2274; Windows Server 2025: 10.0.26100.0 < 10.0.26100.32690; Windows Server 2025 (Server Core installation): 10.0.26100.0 < 10.0.26100.32690 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  3. Remediation statusRemediation status changed from Mitigation available to Awaiting fix.
    Before
    Mitigation available
    After
    Awaiting fix
    secure@microsoft.com ↗
  4. Remediation statusRemediation status changed from Awaiting fix to Mitigation available.
    Before
    Awaiting fix
    After
    Mitigation available
    CSIRT Italia ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Remediation guidance recorded
ENISA EUVD · EUVD-2026-22376↗CSIRT Italia remediation guidance↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-26154 · cve.blacktree.nl