Vulnerabilities

CVSS

7.8 High

Vector

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

Risk score

100.0

Known exploited

CISA KEV

Published

2025-02-11

Status

Published

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Weaknesses

CWE-122

Coverage 1

vulnerability

August 2026 Patch Tuesday: Microsoft Fixes 421 CVEs, One Exploited Zero-Day

Microsoft released a substantial update addressing 421 vulnerabilities, including a critical zero-day exploit in a kernel-mode driver (afd.sys). Threat actors, potentially including nation-state actors like those linked…

SecurityWeek · Aug 11, 2026 High

CVE-2026-68820CVE-2025-32709CVE-2025-21418zero-daykernel-modeprivilege escalation

All articles mentioning it

Advisories and references

• msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21418
• cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-...