What’s Vulnerable › Vulnerabilities
CVE-2026-85921: Windows Secure Kernel Mode Elevation of Privilege Vulnerability
- Severity: high (CVSS 8.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-14 · updated 2026-10-31
- Weakness: CWE-415
Description
Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Affected products
- Microsoft Windows 11 version 26H1: before 10.0.28000.2956 — fixed in 10.0.28000.2956
- Microsoft Windows 11 version 26H1: from 10.0.28000.0 before 10.0.28000.2956 — fixed in 10.0.28000.2956
How to fix
Upgrade to a fixed version: Microsoft Windows 11 version 26H1 10.0.28000.2956; Microsoft Windows 11 version 26H1 10.0.28000.2956. Check the vendor advisory for mitigations.
References
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