Skip to content
Actively exploitedCVSS 7.8 · HIGH

CVE-2026-85880Privilege Escalation in Windows ALPC

Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally.

View on NVD

Analysis

Esta vulnerabilidad de desbordamiento de búfer en el componente ALPC de Windows permite a un atacante con acceso local elevar sus privilegios hasta el nivel de sistema. Se ha confirmado que está siendo explotada activamente en ataques reales para tomar control total de servidores y estaciones de trabajo. Es fundamental aplicar los parches de seguridad de Microsoft en entornos de desarrollo y producción basados en Windows.

Relevant roles

ciberseguridadWindows

Severity

Score: 7.8(HIGH)
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AV: LOCAL
AC: LOW
PR: LOW
UI: NONE
S: UNCHANGED
C: HIGH
I: HIGH
A: HIGH
Weakness (CWE): CWE-122CWE-908

CISA KEV

Added to KEV: 2026-09-08
Federal patch deadline: 2026-09-22
Known ransomware use: Unknown
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.

EPSS

No EPSS score yet (CVE may be too fresh).

Affects

microsoft:windows_10_1607microsoft:windows_10_1809microsoft:windows_10_21h2microsoft:windows_10_22h2microsoft:windows_server_2012microsoft:windows_server_2016microsoft:windows_server_2019microsoft:windows_server_2022

Technical description

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

Published: 9/8/2026, 6:21:14 PM
Last modified: 9/8/2026, 7:28:36 PM

References

InicioEventosBlogRecursosCursosEquipo