CVE-2026-21241

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

En bref

Sévérité
HIGH 7.0
EPSS
EPSS 2.60 % · centile 85 (2026-10-27)
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
microsoft
Statut NVD
Analyzed

Description

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1HIGH 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:Cmicrosoft
CVSS 3.1HIGH 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HNVD · secure@microsoft.com (Secondary)

Faiblesses (CWE)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Microsoft · Windows 11 version 22H3affected 10.0.22631.0 < 10.0.22631.6649
Microsoft · Windows 11 Version 23H2affected 10.0.22631.0 < 10.0.22631.6649
Microsoft · Windows 11 Version 24H2affected 10.0.26100.0 < 10.0.26100.7840
Microsoft · Windows 11 Version 25H2affected 10.0.26200.0 < 10.0.26200.7840
Microsoft · Windows 11 version 26H1affected 10.0.28000.0 < 10.0.28000.1575
Microsoft · Windows 11 Version 26H1affected 10.0.28000.0 < 10.0.28000.1575
Microsoft · Windows Server 2022affected 10.0.20348.0 < 10.0.20348.4773
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)affected 10.0.25398.0 < 10.0.25398.2149
Microsoft · Windows Server 2025affected 10.0.26100.0 < 10.0.26100.32370
Microsoft · Windows Server 2025 (Server Core installation)affected 10.0.26100.0 < 10.0.26100.32370

Références

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD