Vulnerability in Microsoft Windows 11 Version 23h2
CVE-2026-65777
Inadequate encryption strength in Windows Active Directory allows an authorized attacker to bypass a security feature over a network.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Microsoft Windows 11 Version 23h2 — versions 10.0.22631.0
- Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
- Microsoft Windows 11 Version 25h2 — versions 10.0.26200.0
- Microsoft Windows 11 Version 26h1 — versions 10.0.28000.0
- Microsoft Windows Server 2022 — versions 10.0.20348.0
- Microsoft Windows Server 2025 — versions 10.0.26100.0
- Microsoft Windows Server 2025 (Server Core Installation) — versions 10.0.26100.0
Weakness classification (CWE)
References
- Active Directory Security Feature Bypass Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-65777?
- CVE-2026-65777 is a medium-severity vulnerability in Microsoft Windows 11 Version 23h2, classified under Inadequate Encryption Strength. CVSS score: 5.3/10. Published 2026-08-11.
- How severe is CVE-2026-65777?
- Medium severity. CVSS v3 base score is 5.3 out of 10.