What is CVE-2026-50418?

CVE-2026-50418 is a medium-severity vulnerability in Microsoft Windows 11 Version 24h2, classified under Improper Access Control. CVSS score: 5.1/10. Published 2026-07-14.

How severe is CVE-2026-50418?

Medium severity. CVSS v3 base score is 5.1 out of 10.

Vulnerability in Microsoft Windows 11 Version 24h2

CVE-2026-50418

Improper access control in Windows System allows an unauthorized attacker to bypass a security feature locally.

CVSS v3 metric

CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

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)

CWE-284 — Improper Access Control

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-50418?: CVE-2026-50418 is a medium-severity vulnerability in Microsoft Windows 11 Version 24h2, classified under Improper Access Control. CVSS score: 5.1/10. Published 2026-07-14.
How severe is CVE-2026-50418?: Medium severity. CVSS v3 base score is 5.1 out of 10.