CVE Watch16 ago 2026

CVE-2026-68820

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

CVSS

7.0

Alto

EPSS

0.3%

p24

KEV

SÍ

11 ago 2026

Exploit Today

0-100

Publicado: 11 ago 2026 · Última mod.: 16 ago 2026 · CWE-416

EPSS · 30d

0.3%EPSS · 30 días6.2%

2026-08-282026-09-25

Ficha del catálogo KEV

Producto

Microsoft / Windows Ancillary Function Driver for WinSock

Vulnerabilidad

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

Añadido a KEV

11 ago 2026

Remediar antes de

25 ago 2026

Uso conocido en ransomware

Descripción resumida

Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

Acción requerida

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.

Notas

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-68820 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-68820

Descripción técnica

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

Referencias oficiales

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