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Full vulnerability report · 2022
CVE-2022-24494High confidence

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Microsoft · Windows 10 Version 1809

7.8HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; 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:Medium, lowered one band.downgradedsince 16 Dec 2025

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 1.91% for the current model date.

Compensating controls

  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

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: As exposure requiresRemediation target: Within 365 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-2022-29375

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; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

What

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

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

What

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

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.
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
local access → vulnerable operation → 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.
CWE not yet assigned
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:U/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 escalation
A

Official authority intelligence

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

BSI · German · WID-SEC-2023-0838Xerox 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 zu verursachen oder Dateien zu manipulieren.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20220420Security Bulletin 20 Apr 2022

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 20 Apr 2022, published on 20 April 2022. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-335Multiples vulnérabilités dans Microsoft Windows

4489 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24489 Bulletin de sécurité Microsoft CVE-2022-24490 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24490 Bulletin de sécurité Microsoft CVE-2022-24491 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24491 Bulletin de sécurité Microsoft CVE-2022-24492 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24492 Bulletin de sécurité Microsoft CVE-2022-24493 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24493 Bulletin de sécurité Microsoft CVE-2022-24494 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24494 Bulletin de sécurité Microsoft CVE-2022-24495 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24495 Bulletin de sécurité Microsoft CVE-2022-24496 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24496 Bulletin de sécurité Microsoft CVE-2022-24498 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24498 Bulletin de sécurité Microsoft CVE-2022-24499 du 12 avril 2022 https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-24499 Bulletin de sécurité Microsoft CVE-

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-001668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、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-5571MS 4월 보안 위협에 따른 정기 보안 업데이트 권고

런타임 원격 코드 실행 취약성 Windows Endpoint Configuration Manager CVE-2022-24527 Windows 끝점 구성 관리자 권한 상승 취약성 Windows Common Log File System Driver CVE-2022-24521 Windows 공용 로그 파일 시스템 드라이버 권한 상승 취약성 Visual Studio CVE-2022-24513 Visual Studio 권한 상승 취약성 Windows SMB CVE-2022-24500 Windows SMB 원격 코드 실행 취약성 Windows Installer CVE-2022-24499 Windows Installer 권한 상승 취약성 Windows iSCSI Target Service CVE-2022-24498 Windows iSCSI 대상 서비스 정보 공개 취약성 Windows Local Security Authority Subsystem Service CVE-2022-24496 LSA(로컬 보안 기관) 권한 상승 취약성 Microsoft Windows Media Foundation CVE-2022-24495 Windows Direct Show - 원격 코드 실행 취약성 Windows Ancillary Function Driver for WinSock CVE-2022-24494 WinSock용 Windows 보조 기능 드라이버 권한 상승 취약성 Microsoft Local Security Authority Server (lsasrv) CVE-2022-24493 Microsoft LSA(로컬 보안 기관) 서버 정보 공개 취약성 Windows Remote Procedure Call Runtime CVE-2022-24492 원격 프로시저 호출 런타임 원격 코드 실행 취약성 Windows Network File System CVE-2022-24491 Windows Network 파일 시스템 원격 코드 실행 취약성 Role: Windows Hyper-V CVE-2022-24490 Windows Hyper-V 공유 가상 하드 디스크 정보 공개 취약성 Windows Cluster Client Failover CVE-2022-24489 CCF(Cluster Client Failover) 권한 상승 취약성 Windows App Store CVE-2022-24488 Windows 데스크톱 브리지 권한 상승 취약성 Windows Local Security Authority Subsystem Service CVE-2022-24487 Windows LSA(로컬 보안 기관) 원격 코드 실행 취약성 Windows Kerberos CVE-2022

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 < 10.0.17763.2803, 10.0.0 < 10.0.17763.2803
  • Windows Server 2019: 10.0.17763.0 < 10.0.17763.2803
  • Windows Server 2019 (Server Core installation): 10.0.17763.0 < 10.0.17763.2803
  • Windows 10 Version 1909: 10.0.0 < 10.0.18363.2212
  • Windows 10 Version 21H1: 10.0.0 < 10.0.19043.1645
  • Windows Server 2022: 10.0.20348.0 < 10.0.20348.643
  • Windows 10 Version 20H2: 10.0.0 < 10.0.19042.1645
  • Windows Server version 20H2: 10.0.0 < 10.0.19042.1645
  • Windows 11 version 21H2: 10.0.0 < 10.0.22000.613
  • Windows 10 Version 21H2: 10.0.19043.0 < 10.0.19044.1645
  • Windows 10 Version 1507: 10.0.10240.0 < 10.0.10240.19265
  • Windows 10 Version 1607: 10.0.14393.0 < 10.0.14393.5066
  • Windows Server 2016: 10.0.14393.0 < 10.0.14393.5066
  • Windows Server 2016 (Server Core installation): 10.0.14393.0 < 10.0.14393.5066
  • Windows 7: 6.1.0 < 6.1.7601.25924
  • Windows 7 Service Pack 1: 6.1.0 < 6.1.7601.25924
  • Windows 8.1: 6.3.0 < 6.3.9600.20337
  • Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.21446
  • Windows Server 2008 Service Pack 2 (Server Core installation): 6.0.6003.0 < 6.0.6003.21446
  • Windows Server 2008 Service Pack 2: 6.0.6003.0 < 6.0.6003.21446
  • Windows Server 2008 R2 Service Pack 1: 6.1.7601.0 < 6.1.7601.25924
  • Windows Server 2008 R2 Service Pack 1 (Server Core installation): 6.1.7601.0 < 6.1.7601.25924
  • Windows Server 2012: 6.2.9200.0 < 6.2.9200.23679
  • Windows Server 2012 (Server Core installation): 6.2.9200.0 < 6.2.9200.23679
  • Windows Server 2012 R2: 6.3.9600.0 < 6.3.9600.20337
  • Windows Server 2012 R2 (Server Core installation): 6.3.9600.0 < 6.3.9600.20337
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 15 Apr 2022 · Last source change 16 Dec 2025, 17:46 UTC · CWE not yet assigned

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-2022-29375
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD modified after enrichment

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

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-2022-29375↗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-2022-24494 · cve.blacktree.nl