Severity
High
Analysis Summary
CVE-2026-85880 CVSS:7.8
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
CVE-2026-81963 CVSS:7.8
Improper link resolution before file access ('link following') in Windows Update Stack allows an authorized attacker to elevate privileges locally.
Impact
- Privilege Escalation
Indicators of Compromise
CVE
CVE-2026-85880
CVE-2026-81963
Affected Vendors
- Microsoft
Affected Products
- Microsoft Windows 10 Version 1607 for 32-bit Systems
- Microsoft Windows 10 Version 1607 for x64-based Systems
- Microsoft Windows 10 Version 1809 for 32-bit Systems
- Microsoft Windows 10 Version 1809 for x64-based Systems
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022 (Server Core installation)
- Microsoft Windows Server 2012 (Server Core installation)
- Microsoft Windows Server 2012 R2 (Server Core installation)
- Microsoft Windows Server 2016 (Server Core installation)
- Microsoft Windows 10 Version 22H2 for x64-based Systems
- Microsoft Windows 10 Version 21H2 for x64-based Systems
- Microsoft Windows 10 Version 22H2 for 32-bit Systems
- Microsoft Windows 10 Version 22H2 for ARM64-based Systems
- Microsoft Windows 10 Version 21H2 for ARM64-based Systems
- Microsoft Windows 10 Version 21H2 for 32-bit Systems
Remediation
Use Microsoft Automatic Update to apply the appropriate patch for your system, or the Microsoft Security Update Guide to search for available patches.

