CVE-2026-85921

Microsoft Windows 11 version 26H1 CWE-415

Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.

CVSS Score

8.2

High

EPSS — Exploit Probability

0.3%

Riskier than 18% of all CVEs · checked 2026-09-18

Exploitation

Not in CISA KEV

KEV does not include every exploited vulnerability

Remediation

Patch available

Vendor fix published

1 article across 1 outlet · first covered Sep 18, 2026 · latest Sep 18, 2026

Coverage timeline