What is CVE-2026-69775?

CVE-2026-69775 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows DWM Core Library Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-69775 cover?

CVE-2026-69775 covers the following CVE IDs: CVE-2026-69775. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-69775?

CVE-2026-69775 has a CVSS v3 base score of 7.1, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-69775?

CVE-2026-69775 affects 4 products, including: Windows 11 Version 23H2 for ARM64-based Systems; Windows 11 Version 23H2 for x64-based Systems; Windows Server 2025; Windows Server 2025 (Server Core installation).

CVE-2026-69775HighCVSS 7.1

Windows DWM Core Library Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

September 11, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-69775 →

📋 Description

Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges over a network.

🎯 Affected products4

Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 23H2 for x64-based Systems
Windows Server 2025
Windows Server 2025 (Server Core installation)

✅ Remediation

KB5122871 (Security Update) — fixed build 10.0.26100.33438 KB5122880 (Security Update) — fixed build 10.0.22631.7582

🔗 References (5)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69775
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5122871
referencehttps://support.microsoft.com/help/5122871
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5122880
referencehttps://support.microsoft.com/help/5122880