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Full vulnerability report · 2022
CVE-2022-21919High confidence

Microsoft Windows User Profile Service Privilege Escalation Vulnerability

Microsoft · Windows

7.0HighCVSS 3.1
Recommended action
Patch now

CISA confirms exploitation in the wild and lists 2022-05-16 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 25 Apr 2022

Evidence used

  • CISA confirms exploitation in the wild.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 2.43% 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-2022-27075

CISA KEV mirrored by ENISA

Windows User Profile Service Elevation of Privilege Vulnerability

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 25 Apr 2022. Evidence sources: cisa_kev.
ENISA score
7.0 · CVSS 3.1
Advisory evidence
2 linked advisory records
Recommended actionPatch now

CISA confirms exploitation in the wild and lists 2022-05-16 as the remediation due date.

Patch available
01

What, why and how

Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.

What

Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.

Why

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

How

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

What

Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.

Why

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

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 2022-04-25.

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 → Improper Link Resolution Before File Access ('Link Following') → gain additional privileges
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
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-59 ↗

CWE-59: Improper Link Resolution Before File Access ('Link Following'). The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

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:H/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.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.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-59CISA KEV
A

Official authority intelligence

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

ENISA EUVD · EUVD-2022-27075Known-exploited evidence recorded

Windows User Profile Service Elevation of Privilege Vulnerability

Official EUVD record ↗
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

d?id=CVE-2022-21907 Référence CVE CVE-2022-21908 https://www.cve.org/CVERecord?id=CVE-2022-21908 Référence CVE CVE-2022-21910 https://www.cve.org/CVERecord?id=CVE-2022-21910 Référence CVE CVE-2022-21912 https://www.cve.org/CVERecord?id=CVE-2022-21912 Référence CVE CVE-2022-21913 https://www.cve.org/CVERecord?id=CVE-2022-21913 Référence CVE CVE-2022-21914 https://www.cve.org/CVERecord?id=CVE-2022-21914 Référence CVE CVE-2022-21915 https://www.cve.org/CVERecord?id=CVE-2022-21915 Référence CVE CVE-2022-21916 https://www.cve.org/CVERecord?id=CVE-2022-21916 Référence CVE CVE-2022-21918 https://www.cve.org/CVERecord?id=CVE-2022-21918 Référence CVE CVE-2022-21919 https://www.cve.org/CVERecord?id=CVE-2022-21919 Référence CVE CVE-2022-21920 https://www.cve.org/CVERecord?id=CVE-2022-21920 Référence CVE CVE-2022-21921 https://www.cve.org/CVERecord?id=CVE-2022-21921 Référence CVE CVE-2022-21922 https://www.cve.org/CVERecord?id=CVE-2022-21922 Référence CVE CVE-2022-21924 https://www.cve.org/CVERecord?id=CVE-2022-21924 Référence CVE CVE-2022-21925 https://www.cve.org/CVERecord?id=CVE-2022-21925 Référence CVE CVE-2022-21928 https://www.cve.org/CVERecord?id=CVE-2022-21928 Référence CVE CVE-2022-21958 https://www.cve.org/CVERecord?id=CVE-2022-21958 Référence CVE CVE-2022-21959 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-001063複数の Microsoft Windows 製品における権限を昇格される脆弱性

複数の Microsoft Windows 製品には、Windows User Profile Service 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。 本脆弱性は、CVE-2022-21919 とは異なる脆弱性です。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-001050複数の Microsoft Windows 製品における権限を昇格される脆弱性

複数の Microsoft Windows 製品には、Windows User Profile Service 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。 本脆弱性は、CVE-2022-21895 とは異なる脆弱性です。

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

ndows Security Center CVE-2022-21874 Windows 보안 센터 API 원격 코드 실행 취약성 Windows StateRepository API CVE-2022-21863 Windows StateRepository API 서버 파일 권한 상승 취약성 Windows Storage CVE-2022-21875 Windows 저장소 권한 상승 취약성 Windows Storage Spaces Controller CVE-2022-21877 저장소 공간 컨트롤러 정보 유출 취약성 Windows System Launcher CVE-2022-21866 Windows 시스템 시작 관리자 권한 상승 취약성 Windows Task Flow Data Engine CVE-2022-21861 작업 흐름 데이터 엔진 권한 상승 취약성 Windows Tile Data Repository CVE-2022-21873 타일 데이터 리포지토리 권한 상승 취약성 Windows UEFI CVE-2022-21899 Windows 확장 가능 펌웨어 인터페이스 보안 기능 우회 취약성 Windows UI Immersive Server CVE-2022-21864 Windows UI 모던 서버 API 권한 상승 취약성 Windows User Profile Service CVE-2022-21919 Windows 사용자 프로필 서비스 권한 상승 취약성 Windows User Profile Service CVE-2022-21895 Windows 사용자 프로필 서비스 권한 상승 취약성 Windows User-mode Driver Framework CVE-2022-21834 Windows 사용자 모드 드라이버 프레임워크 리플렉터 드라이버 권한 상승 취약성 Windows Virtual Machine IDE Drive CVE-2022-21833 가상 머신 IDE 드라이브 권한 상승 취약성 Windows Win32K CVE-2022-21887 Win32k 권한 상승 취약성 Windows Win32K CVE-2022-21882 Win32k 권한 상승 취약성 Windows Win32K CVE-2022-21876 Win32k 정보 유출 취약성 Windows Workstation Service Remote Protocol CVE-2022-21924 워크스테이션 서비스 원격 프로토콜 보안 기능 우회 취약성 ##### □ 작성 : 침해사고분석단 취약점분석팀

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 Jan 2022 · Last source change 21 Oct 2025, 23:15 UTC · CWE-59 · Improper Link Resolution Before File Access ('Link Following')

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-2022-27075
Product sourceCISA KEV
Remediation sourceCVE/CNA references
CWE sourceCISA ADP
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. Affected versionsThe structured affected or fixed version information changed.
    Before
    10.0.17763.0 < 10.0.17763.2452; 10.0.0 < 10.0.17763.2452; 10.0.0 < 10.0.18363.2037; 10.0.0 < 10.0.19043.1466; 10.0.20348.0 < 10.0.20348.469; 10.0.0 < 10.0.19042.1466 · 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 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 < 10.0.19043.1466; 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: 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-2022-27075↗CISA KEV record↗CVE authority or vendor reference↗Vendor advisory↗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-2022-21919 · cve.blacktree.nl