CVE-2026-859218.2HighCWE-415
Microsoft Windows 11 version 26H1 vulnerability
Microsoft · Windows 11 version 26H1
Not in CISA KEVVendor fix available
0.3%probability of exploitation in the next 30 days
28th percentile
050100
Higher than 28% of scored CVEs
8.2HighCVSS 3.1
LowMediumHighCrit.
DescriptionNVD
Double free in Windows Secure Kernel Mode allows an authorized attacker to elevate privileges locally.
Coverage1 article · 1 outlet
First in our coverage: SecurityWeek, 18 Sep.
- Microsoft Fixes 18 Azure and Copilot Flaws, Urges Windows UpdateSecurityWeek · first in our coverage
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