Use After Free in Microsoft Windows 10 Version 1607
CVE-2026-69366
Use after free in Windows Kernel allows an authorized attacker to elevate privileges over a network.
Vulnerability class: Use-After-Free
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows 10 Version 1607
- Microsoft Windows 10 Version 1809
- Microsoft Windows 10 Version 21h2
- Microsoft Windows 10 Version 22h2
- Microsoft Windows 11 Version 23h2
- Microsoft Windows 11 Version 24h2
- Microsoft Windows 11 Version 25h2
- Microsoft Windows 11 Version 26h1
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 R2
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-69366?
- CVE-2026-69366 is a high-severity vulnerability in Microsoft Windows 10 Version 1607, classified under Use After Free. CVSS score: 7.1/10. Published 2026-09-08.
- How severe is CVE-2026-69366?
- High severity. CVSS v3 base score is 7.1 out of 10.