CVE-2026-68820

high

Description

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

From the Tenable Blog

August 2026 Microsoft Patch Tuesday | Tenable®

Published: 2026-08-11

Microsoft patched 398 CVEs in August including three zero-day flaws, one exploited in the wild: CVE-2026-68820 in the Windows Ancillary Function Driver for WinSock.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68820

https://www.securityweek.com/august-2026-patch-tuesday-microsoft-fixes-421-cves-one-exploited-zero-day/

https://thehackernews.com/2026/08/microsoft-patches-398-flaws-including.html

https://research.checkpoint.com/2026/shattering-the-dream-when-a-job-offer-becomes-a-zero-day-attack/

https://blog.checkpoint.com/research/state-sponsored-hackers-use-fake-job-offers-to-deliver-new-zero-day-exploit/

https://www.tenable.com/blog/microsofts-august-2026-patch-tuesday-addresses-398-cves-cve-2026-68820

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-68820

Details

Source: Mitre, NVD

Published: 2026-08-11

Updated: 2026-08-11

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 6

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7

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

Severity: High

Detections

Analytics