CVE Watch24 sept 2026

CVE-2026-85880

Microsoft Windows Heap-Based Buffer Overflow Vulnerability

CVSS

7.8

Alto

EPSS

3.6%

p89

KEV

SÍ

8 sept 2026

Exploit Today

0-100

Publicado: 8 sept 2026 · Última mod.: 24 sept 2026 · CWE-122 · CWE-908

EPSS · 30d

3.6%EPSS · 30 días3.6%

2026-09-252026-10-23

Ficha del catálogo KEV

Producto

Microsoft / Windows

Vulnerabilidad

Microsoft Windows Heap-Based Buffer Overflow Vulnerability

Añadido a KEV

8 sept 2026

Remediar antes de

22 sept 2026

Uso conocido en ransomware

Descripción resumida

Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an 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://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-85880 ; 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-2026-85880

Descripción técnica

Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.

Referencias oficiales

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