CVE-2026-69775: CWE-416: Use After Free in Microsoft Windows 11 version 23H2
Description
CVE-2026-69775 is a high-severity use-after-free vulnerability in the Windows DWM Core Library affecting Windows 11 version 23H2. It allows an authorized attacker to elevate privileges over a network. The vulnerability has a CVSS score of 7.1 and has been officially fixed by Microsoft.
CVSS v3.1
Score 7.1high
Affected software
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-69775 and classified under CWE-416 (Use After Free), exists in the Windows DWM Core Library of Windows 11 version 23H2. An authorized attacker can exploit this flaw over a network to elevate privileges. The CVSS v3.1 base score is 7.1 with vector AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H, indicating network attack vector with high impact on confidentiality, integrity, and availability, but requiring low privileges and user interaction. Microsoft has published an official fix for the affected versions.
Potential Impact
Successful exploitation allows an authorized attacker to elevate privileges remotely over a network, potentially gaining higher system privileges and causing significant confidentiality, integrity, and availability impacts on the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for Windows 11 version 23H2 to remediate this vulnerability. No additional mitigation actions are specified beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T22:46:09.552Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69775","vendor":"Microsoft"}]
Threat ID: 6aa04529acd9273b49fa992c
Added to database: 09/08/2026, 17:26:01 UTC
Last enriched: 10/16/2026, 21:32:59 UTC
Last updated: 10/22/2026, 13:15:23 UTC
Views: 25
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