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Full vulnerability report · 2022
CVE-2022-21836High confidence

Windows Certificate Spoofing Vulnerability

Microsoft · Windows 10 Version 1809

7.8HighCVSS 3.1
Recommended action
Within 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
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.
  • A structured source references public exploit or proof-of-concept material.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.70% for the current model date.

Compensating controls

  • 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 10 Version 1809 and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  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-2022-26992

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

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
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

Windows Certificate Spoofing Vulnerability

What

Windows Certificate Spoofing Vulnerability

Why

The product does not validate, or incorrectly validates, a certificate.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Windows Certificate Spoofing Vulnerability

Why

The product does not validate, or incorrectly validates, a certificate.

How

An attacker operating through local access may attempt exploitation with low privileges. 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.
Reference recorded

CISA Vulnrichment records proof-of-concept exploitation in its SSVC data. BlackTree has not independently executed or validated exploit material.

Likely attack path
local access → Improper Certificate Validation → cause the confidentiality, integrity or availability impact described by the vendor
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-295 ↗

CWE-295: Improper Certificate Validation. The product does not validate, or incorrectly validates, a certificate.

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:P/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.
CWE-295Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-2023-0839Xerox FreeFlow Print Server: Mehrere Schwachstellen

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um beliebigen Programmcode auszuführen, einen Cross-Site-Scripting-Angriff durchzuführen, Informationen offenzulegen, einen Denial of Service Zustand herbeizuführen oder Dateien zu manipulieren.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20220112Security Bulletin 12 Jan 2022

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 12 Jan 2022, published on 12 January 2022. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-027Multiples vulnérabilités dans Microsoft Windows

une usurpation d'identité. Solution Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Microsoft du 11 janvier 2022 https://msrc.microsoft.com/update-guide/ Référence CVE CVE-2021-22947 https://www.cve.org/CVERecord?id=CVE-2021-22947 Référence CVE CVE-2021-36976 https://www.cve.org/CVERecord?id=CVE-2021-36976 Référence CVE CVE-2022-21833 https://www.cve.org/CVERecord?id=CVE-2022-21833 Référence CVE CVE-2022-21834 https://www.cve.org/CVERecord?id=CVE-2022-21834 Référence CVE CVE-2022-21835 https://www.cve.org/CVERecord?id=CVE-2022-21835 Référence CVE CVE-2022-21836 https://www.cve.org/CVERecord?id=CVE-2022-21836 Référence CVE CVE-2022-21838 https://www.cve.org/CVERecord?id=CVE-2022-21838 Référence CVE CVE-2022-21839 https://www.cve.org/CVERecord?id=CVE-2022-21839 Référence CVE CVE-2022-21843 https://www.cve.org/CVERecord?id=CVE-2022-21843 Référence CVE CVE-2022-21847 https://www.cve.org/CVERecord?id=CVE-2022-21847 Référence CVE CVE-2022-21848 https://www.cve.org/CVERecord?id=CVE-2022-21848 Référence CVE CVE-2022-21849 https://www.cve.org/CVERecord?id=CVE-2022-21849 Référence CVE CVE-2022-21850 https://www.cve.org/CVERecord?id=CVE-2022-21850 Référence CVE CVE-2022-21851 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-001025複数の Microsoft Windows 製品におけるなりすまされる脆弱性

複数の Microsoft Windows 製品には、Windows 証明書に不備があるため、なりすまされる脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-5478MS 1월 보안 위협에 따른 정기 보안 업데이트 권고

2022-21847 Windows Hyper-V 서비스 거부 취약성 Tablet Windows User Interface CVE-2022-21870 태블릿 Windows 사용자 인터페이스 응용 프로그램 핵심 권한 상승 취약성 Windows Account Control CVE-2022-21859 Windows 계정 제어판 권한 상승 취약성 Windows Active Directory CVE-2022-21857 Active Directory Domain Services Elevation of Privilege Vulnerability Windows AppContracts API Server CVE-2022-21860 Windows AppContracts API 서버 권한 상승 취약성 Windows Application Model CVE-2022-21862 Windows 응용 프로그램 모델 Core API 권한 상승 취약성 Windows BackupKey Remote Protocol CVE-2022-21925 Windows BackupKey 원격 프로토콜 보안 기능 우회 취약성 Windows Bind Filter Driver CVE-2022-21858 Windows Bind Filter 드라이버 권한 상승 취약성 Windows Certificates CVE-2022-21836 Windows 인증서 스푸핑 취약성 Windows Cleanup Manager CVE-2022-21838 Windows 정리 관리자 권한 상승 취약성 Windows Clipboard User Service CVE-2022-21869 클립보드 사용자 서비스 권한 상승 취약성 Windows Cluster Port Driver CVE-2022-21910 Microsoft 클러스터 포트 드라이버 권한 상승 취약성 Windows Common Log File System Driver CVE-2022-21916 Windows 공용 로그 파일 시스템 드라이버 권한 상승 취약성 Windows Common Log File System Driver CVE-2022-21897 Windows 공용 로그 파일 시스템 드라이버 권한 상승 취약성 Windows Connected Devices Platform Service CVE-2022-21865 연결된 디바이스 플랫폼 서비스 권한 상승 취약성 Windows Cryptographic Services CVE-2022-21835 Microsoft 암호화 서비스 권한 상승 취약성 Windows Defender CVE-2022-21921 Windows Defender Credential Guard 보안 기능 우회 취약성 Wind

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.
Fix not verified
Affected
  • Windows 10 Version 1809: 10.0.17763.0 < 10.0.17763.2452, 10.0.0 < 10.0.17763.2452
  • Windows Server 2019: 10.0.17763.0 < 10.0.17763.2452
  • Windows Server 2019 (Server Core installation): 10.0.17763.0 < 10.0.17763.2452
  • Windows 10 Version 1909: 10.0.0 < 10.0.18363.2037
  • Windows 10 Version 21H1: 10.0.0 < 10.0.19043.1466
  • Windows Server 2022: 10.0.20348.0 < 10.0.20348.469
  • Windows 10 Version 20H2: 10.0.0 < 10.0.19042.1466
  • Windows Server version 20H2: 10.0.0 < 10.0.19042.1466
  • Windows 11 version 21H2: 10.0.0 < 10.0.22000.434
  • Windows 10 Version 21H2: 10.0.19043.0 < 10.0.19044.1466
  • Windows 10 Version 1507: 10.0.10240.0 < 10.0.10240.19177
  • Windows 10 Version 1607: 10.0.14393.0 < 10.0.14393.4886
  • Windows Server 2016: 10.0.14393.0 < 10.0.14393.4886
  • Windows Server 2016 (Server Core installation): 10.0.14393.0 < 10.0.14393.4886
  • Windows 7: 6.1.0 < 6.1.7601.25829
  • Windows 7 Service Pack 1: 6.1.0 < 6.1.7601.25829
  • Windows 8.1: 6.3.0 < 6.3.9600.20246
  • Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.21349
  • Windows Server 2008 Service Pack 2 (Server Core installation): 6.0.6003.0 < 6.0.6003.21349
  • Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.21349
  • Windows Server 2008 R2 Service Pack 1: 6.1.7601.0 < 6.1.7601.25829
  • Windows Server 2008 R2 Service Pack 1 (Server Core installation): 6.1.7601.0 < 6.1.7601.25829
  • Windows Server 2012: 6.2.9200.0 < 6.2.9200.23584
  • Windows Server 2012 (Server Core installation): 6.2.9200.0 < 6.2.9200.23584
  • Windows Server 2012 R2: 6.3.9600.0 < 6.3.9600.20246
  • Windows Server 2012 R2 (Server Core installation): 6.3.9600.0 < 6.3.9600.20246
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 11 Jan 2022 · Last source change 2 Jan 2025, 18:22 UTC · CWE-295 · Improper Certificate Validation

CVE recordCVE.org · 5.1
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-2022-26992
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

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

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2022-26992↗CISA Vulnrichment SSVC evidence↗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-2022-21836 · cve.blacktree.nl