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Full vulnerability report · 2025
CVE-2025-21418High confidence

Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability

Microsoft · Windows

7.8HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2025-03-04 as the remediation due date.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 11 Feb 2025

Evidence used

  • CISA confirms exploitation in the wild.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 1.57% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Microsoft Windows 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 3 daysRemediation target: Within 90 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-2025-2476

CISA KEV mirrored by ENISA

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 11 Feb 2025. Evidence sources: cisa_kev.
ENISA score
7.8 · CVSS 3.1
Advisory evidence
3 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_ncscnl · NCSC-2025-0047Kwetsbaarheden verholpen in Microsoft Windows
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2025-03-04 as the remediation due date.

Patch available
01

What, why and how

Microsoft Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.

What

Microsoft Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.

Why

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

What

Microsoft Windows Ancillary Function Driver for WinSock contains a heap-based buffer overflow vulnerability that allows for privilege escalation, enabling a local attacker to gain SYSTEM privileges.

Why

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

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.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2025-02-11.

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
local access → Heap-based Buffer Overflow → gain additional privileges
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
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-122 ↗

CWE-122: Heap-based Buffer Overflow. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

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

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

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Privilege escalationCWE-122CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2025-2476Known-exploited evidence recorded

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Official EUVD record ↗
BSI · German · WID-SEC-2025-0331Microsoft Windows: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Microsoft Windows Server, Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows 10, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022 und Microsoft Windows 11 ausnutzen, um einen Denial-of-Service-Zustand herbeizuführen, Spoofing-Angriffe durchzuführen, beliebigen Code auszuführen, erhöhte Rechte zu erlangen - sogar SYSTEM-Rechte - und Daten zu manipulieren.

Official advisory ↗
Canadian Centre for Cyber Security · English · AV25-076Microsoft security advisory – February 2025 monthly rollup (AV25–076)

On February 11, 2025, Microsoft published security advisories to address vulnerabilities in multiple products. Included were updates for the following products: Microsoft has indicated that CVE-2025-21418, CVE-2025-21391 and CVE-2023-24932 have been exploited.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20250213Security Bulletin 13 February 2025

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 13 February 2025, published on 13 February 2025. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0116Multiples vulnérabilités dans Microsoft Windows

5-21375 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21376 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21377 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21379 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21391 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21406 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21407 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21410 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21414 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21418 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21419 du 10 février 2025 Bulletin de sécurité Microsoft Windows CVE-2025-21420 du 10 février 2025 Une gestion de version détaillée se trouve à la fin de ce document. Risques Atteinte à l'intégrité des données Contournement de la politique de sécurité Déni de service à distance Exécution de code arbitraire à distance Élévation de privilèges Systèmes affectés Windows 10 pour systèmes 32 bits versions antérieures à 10.0.10240.20915 Windows 10 pour systèmes x64 versions antérieures à 10.0.10240.20915 Windows 10 Version 1607 pour systèmes 32 bits versions antérieures à 10.0.14393.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2025-001564マイクロソフトの複数の Microsoft Windows 製品における権限を昇格される脆弱性

マイクロソフトの Microsoft Windows 10、Windows 11、Windows Server には、WinSock 用 Windows Ancillary Function Driver に不備があるため、権限を昇格される脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6394MS 2월 보안 위협에 따른 정기 보안 업데이트 권고

] (영문) https://msrc.microsoft.com/update-guide/en-us/ [3] https://msrc.microsoft.com/update-guide/ko-kr/releaseNote/2025-Feb o 취약점 요약 정보 (총 123개) | 제품 카테고리 | CVE 번호 | CVE 제목 | | --- | --- | --- | | Visual Studio Code | CVE-2025-24042 | Visual Studio Code JS 디버그 확장 권한 상승 취약성 | | Visual Studio Code | CVE-2025-24039 | Visual Studio Code 권한 상승 취약성 | | Microsoft AutoUpdate (MAU) | CVE-2025-24036 | MAU(Microsoft 자동 업데이트) 권한 상승 취약성 | | Windows Disk Cleanup Tool | CVE-2025-21420 | Windows 디스크 정리 도구 권한 상승 취약성 | | Windows Setup Files Cleanup | CVE-2025-21419 | Windows Setup Files Cleanup 권한 상승 취약성 | | Windows Ancillary Function Driver for WinSock | CVE-2025-21418 | WinSock용 Windows 보조 기능 드라이버 권한 상승 취약성 | | Azure AI Face Service | CVE-2025-21415 | Azure App Service 권한 상승 취약성 | | Windows DWM Core Library | CVE-2025-21414 | Windows Core Messaging 권한 상승 취약성 | | Windows Routing and Remote Access Service (RRAS) | CVE-2025-21410 | Windows RRAS(Routing and Remote Access Service) 원격 코드 실행 취약성 | | Microsoft Edge (Chromium-based) | CVE-2025-21408 | Microsoft Edge(Chromium 기반) 원격 코드 실행 취약성 | | Windows Telephony Service | CVE-2025-21407 | Windows 전화 통신 서비스 원격 코드 실행 취약성 | | Windows Telephony Service | CVE-2025-21406 | Windows 전화 통신 서비스 원격 코드 실행 취약성 | | Microsoft Edge (Chromium-based) | CVE-2025-21404 | Microsoft E

Official advisory ↗
NCSC-NL · Dutch · NCSC-2025-0047Kwetsbaarheden 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-Servie (DoS) - Verkrijgen van verhoogde rechten - Omzeilen van beveiligingsmaatregel - Spoofing - Uitvoer van willekeurige code (Gebruikersrechten) Van de kwetsbaarheden met kenmerk CVE-2025-21391 en CVE-2025-21418 meldt Microsoft informatie te hebben dat deze beperkt zijn misbruikt. Deze kwetsbaarheden bevinden zich respectievelijk in Windows Storage en WinSOCK. Succesvol misbruik vereist wel dat de kwaadwillende lokale toegang heeft tot het kwetsbare systeem. Van de kwetsbaarheid met kenmerk CVE-2025-21377 geeft Microsoft aan informatie te hebben dat deze de aandacht heeft van onderzoekers, maar er is (nog) geen publieke Proof-of-Concept (PoC) of exploit bekend. Deze kwetsbaarheid bevindt zich in de wijze waarop omgegaan wordt met NTLMv2. ``` Windows Disk Cleanup Tool: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21420 | 7.80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Telephony Server: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21201 | 8.80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows Remote Desktop Services: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21349 | 6.80 | | |----------------|------|-------------------------------------| Microsoft Digest Authentication: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21368 | 8.80 | Uitvoeren van willekeurige code | | CVE-2025-21369 | 8.80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows Internet Connection Sharing (ICS): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21352 | 6.50 | Denial-of-Service | | CVE-2025-21212 | 6.50 | Denial-of-Service | | CVE-2025-21216 | 6.50 | Denial-of-Service | | CVE-2025-21254 | 6.50 | Denial-of-Service | |----------------|------|-------------------------------------| Windows NTLM: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21377 | 6.50 | Voordoen als andere gebruiker | |----------------|------|-------------------------------------| Windows DHCP Client: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21179 | 4.80 | Denial-of-Service | |----------------|------|-------------------------------------| Windows Ancillary Function Driver for WinSock: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21418 | 7.80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Kernel: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21359 | 7.80 | Omzeilen van beveiligingsmaatregel | |----------------|------|-------------------------------------| Windows Win32 Kernel Subsystem: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21367 | 7.80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Update Stack: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21347 | 6.00 | Denial-of-Service | |----------------|------|-------------------------------------| Windows Installer: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21373 | 7.80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Setup Files Cleanup: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21419 | 7.10 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Kerberos: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21350 | 5.90 | Denial-of-Service | |----------------|------|-------------------------------------| Windows Routing and Remote Access Service (RRAS): |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21208 | 8.80 | Uitvoeren van willekeurige code | | CVE-2025-21410 | 8.80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Microsoft Streaming Service: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21375 | 7.80 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows CoreMessaging: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21358 | 7.80 | Verkrijgen van verhoogde rechten | | CVE-2025-21184 | 7.00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Resilient File System (ReFS) Deduplication Service: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21182 | 7.40 | Verkrijgen van verhoogde rechten | | CVE-2025-21183 | 7.40 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows DHCP Server: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21379 | 7.10 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows LDAP - Lightweight Directory Access Protocol: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21376 | 8.10 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows Telephony Service: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21406 | 8.80 | Uitvoeren van willekeurige code | | CVE-2025-21407 | 8.80 | Uitvoeren van willekeurige code | | CVE-2025-21190 | 8.80 | Uitvoeren van willekeurige code | | CVE-2025-21200 | 8.80 | Uitvoeren van willekeurige code | | CVE-2025-21371 | 8.80 | Uitvoeren van willekeurige code | |----------------|------|-------------------------------------| Windows Message Queuing: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21181 | 7.50 | Denial-of-Service | |----------------|------|-------------------------------------| Windows DWM Core Library: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21414 | 7.00 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Microsoft Windows: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21337 | 3.30 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Windows Storage: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21391 | 7.10 | Verkrijgen van verhoogde rechten | |----------------|------|-------------------------------------| Active Directory Domain Services: |----------------|------|-------------------------------------| | CVE-ID | CVSS | Impact | |----------------|------|-------------------------------------| | CVE-2025-21351 | 7.50 | Denial-of-Service | |----------------|------|-------------------------------------| ```

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. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 11 Feb 2025 · Last source change 26 Feb 2026, 19:09 UTC · CWE-122 · Heap-based Buffer Overflow

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-2025-2476
Product sourceCISA KEV
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. BlackTree coverageBlackTree article coverage changed from no BlackTree article to 1 BlackTree article.
    Before
    no BlackTree article
    After
    1 BlackTree article
    BlackTree editorial ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    10.0.10240.0 < 10.0.10240.20915; 10.0.14393.0 < 10.0.14393.7785; 10.0.17763.0 < 10.0.17763.6893; 10.0.19044.0 < 10.0.19044.5487; 10.0.19045.0 < 10.0.19045.5487; 10.0.22621.0 < 10.0.22621.4890; 10.0.22631.0 < 10.0.22631.4890 · 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.
    After
    Windows 10 Version 1507: 10.0.10240.0 < 10.0.10240.20915; Windows 10 Version 1607: 10.0.14393.0 < 10.0.14393.7785; Windows 10 Version 1809: 10.0.17763.0 < 10.0.17763.6893; Windows 10 Version 21H2: 10.0.19044.0 < 10.0.19044.5487; Windows 10 Version 22H2: 10.0.19045.0 < 10.0.19045.5487; Windows 11 version 22H2: 10.0.22621.0 < 10.0.22621.4890; Windows 11 version 22H3: 10.0.22631.0 < 10.0.22631.4890; Windows 11 Version 23H2: 10.0.22631.0 < 10.0.22631.4890; Windows 11 Version 24H2: 10.0.26100.0 < 10.0.26100.3194; Windows Server 2008 R2 Service Pack 1: 6.1.7601.0 < 6.1.7601.27566; Windows Server 2008 R2 Service Pack 1 (Server Core installation): 6.1.7601.0 < 6.1.7601.27566; Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.23117; Windows Server 2008 Service Pack 2 (Server Core installation): 6.0.6003.0 < 6.0.6003.23117; Windows Server 2012: 6.2.9200.0 < 6.2.9200.25317; Windows Server 2012 (Server Core installation): 6.2.9200.0 < 6.2.9200.25317; Windows Server 2012 R2: 6.3.9600.0 < 6.3.9600.22417; Windows Server 2012 R2 (Server Core installation): 6.3.9600.0 < 6.3.9600.22417; Windows Server 2016: 10.0.14393.0 < 10.0.14393.7785; Windows Server 2016 (Server Core installation): 10.0.14393.0 < 10.0.14393.7785; Windows Server 2019: 10.0.17763.0 < 10.0.17763.6893; Windows Server 2019 (Server Core installation): 10.0.17763.0 < 10.0.17763.6893; Windows Server 2022: 10.0.20348.0 < 10.0.20348.3207; Windows Server 2022, 23H2 Edition (Server Core installation): 10.0.25398.0 < 10.0.25398.1425; Windows Server 2025: 10.0.26100.0 < 10.0.26100.3194; Windows Server 2025 (Server Core installation): 10.0.26100.0 < 10.0.26100.3194 · 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.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2025-2476↗CISA KEV record↗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-2025-21418 · cve.blacktree.nl