What is CVE-2026-69775?

CVE-2026-69775 is a high-severity vulnerability in Microsoft Windows 11 Version 23h2, classified under Use After Free. CVSS score: 7.1/10. Published 2026-09-08.

How severe is CVE-2026-69775?

High severity. CVSS v3 base score is 7.1 out of 10.

Use After Free in Microsoft Windows 11 Version 23h2

CVE-2026-69775

Use after free in Windows DWM Core Library 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 11 Version 23h2
Microsoft Windows Server 2025
Microsoft Windows Server 2025 (Server Core Installation)

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-69775?: CVE-2026-69775 is a high-severity vulnerability in Microsoft Windows 11 Version 23h2, classified under Use After Free. CVSS score: 7.1/10. Published 2026-09-08.
How severe is CVE-2026-69775?: High severity. CVSS v3 base score is 7.1 out of 10.