CVE-2026-68820

HIGH7.0

CISA KEV

Published 2026-08-11 · Updated 2026-08-16 · Source secure@microsoft.com

Description

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

CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-416

CISA Known-Exploited Vulnerability

Product: Microsoft — Windows Ancillary Function Driver for WinSock

Name: Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability

Date added: 2026-08-11 · Due: 2026-08-25

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

References

View on NVD

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