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Sårbarheter

CVE-2026-81963

Windows Update Stack Elevation of Privilege Vulnerability

Utnyttes aktivt (CISA KEV) Høy 7.8 CVSS 3.1

Beskrivelse

Improper link resolution before file access ('link following') in Windows Update Stack allows an authorized attacker to elevate privileges locally.

Beskrivelsen gjengis slik kilden har publisert den, på engelsk.

Nøkkelfakta

Publisert
2026-09-08
Sist endret
2026-09-18
Tildelt av
microsoft
CVSS-vektor
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
Scoret av
CVE Program
Rettelse finnes
Ja, se referansene

Aktivt utnyttet

CISA førte denne sårbarheten inn i katalogen over kjente utnyttede sårbarheter 2026-09-08, med utbedringsfrist 2026-09-22 for amerikanske føderale etater.

Pålagt tiltak: 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.

Berørte produkter

Leverandør Produkt Versjoner Status
Microsoft Windows 11 version 23H2 (ARM64-based Systems) ≥ 10.0.22631.0, < 10.0.22631.7582 Berørt
Microsoft Windows 11 Version 24H2 (ARM64-based Systems) ≥ 10.0.26100.0, < 10.0.26100.9445 Berørt
Microsoft Windows 11 Version 25H2 (ARM64-based Systems) ≥ 10.0.26200.0, < 10.0.26200.9445 Berørt
Microsoft Windows 11 version 26H1 (ARM64-based Systems) ≥ 10.0.28000.0, < 10.0.28000.2954 Berørt
Microsoft Windows Server 2025 (x64-based Systems) ≥ 10.0.26100.0, < 10.0.26100.33438 Berørt
Microsoft Windows Server 2025 (Server Core installation) (x64-based Systems) ≥ 10.0.26100.0, < 10.0.26100.33438 Berørt

Svakhetstype

Angrepsteknikker

Utledet gjennom svakhetstypen: CVE til CWE til CAPEC til ATT&CK. Dette viser hvilke teknikker svakhetsklassen historisk brukes til. Det er ikke en påstand om at nettopp denne sårbarheten er utnyttet slik.

  • T1014: Rootkit stealth
  • T1027.006: HTML Smuggling stealth
  • T1027.009: Embedded Payloads stealth
  • T1037: Boot or Logon Initialization Scripts persistence, privilege-escalation
  • T1080: Taint Shared Content lateral-movement
  • T1505.005: Terminal Services DLL persistence
  • T1542.003: Bootkit stealth, persistence
  • T1543: Create or Modify System Process persistence, privilege-escalation
  • T1543.001: Launch Agent persistence, privilege-escalation
  • T1543.003: Windows Service persistence, privilege-escalation
  • T1543.004: Launch Daemon persistence, privilege-escalation
  • T1546.001: Change Default File Association privilege-escalation, persistence
  • T1546.004: Unix Shell Configuration Modification privilege-escalation, persistence
  • T1546.008: Accessibility Features privilege-escalation, persistence
  • T1546.016: Installer Packages privilege-escalation, persistence
  • T1547: Boot or Logon Autostart Execution persistence, privilege-escalation
  • T1547.006: Kernel Modules and Extensions persistence, privilege-escalation
  • T1547.009: Shortcut Modification persistence, privilege-escalation
  • T1553.004: Install Root Certificate defense-impairment
  • T1556.006: Multi-Factor Authentication defense-impairment, persistence, credential-access

Referanser

Relatert hos Berigo

Artikler

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