CVE-2026-61929: CWE-416: Use After Free in Microsoft Windows 11 version 23H2
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, identified as CWE-416 (Use After Free), exists in the Windows Kernel of Windows 11 version 23H2 (build 10.0.22631.0). It allows a local attacker with authorized access to exploit a use-after-free condition to elevate their privileges. The vulnerability is rated high severity with a CVSS 3.1 score of 7.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher-level access than intended. This can lead to full system compromise depending on the privileges gained. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61929 to remediate this vulnerability.
CVE-2026-61929: CWE-416: Use After Free in Microsoft Windows 11 version 23H2
Description
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-416 (Use After Free), exists in the Windows Kernel of Windows 11 version 23H2 (build 10.0.22631.0). It allows a local attacker with authorized access to exploit a use-after-free condition to elevate their privileges. The vulnerability is rated high severity with a CVSS 3.1 score of 7.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher-level access than intended. This can lead to full system compromise depending on the privileges gained. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61929 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-13T04:47:32.463Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61929","vendor":"Microsoft"}]
Threat ID: 6a7b5804bf8831d5391558c4
Added to database: 08/11/2026, 17:12:36 UTC
Last enriched: 08/11/2026, 22:42:08 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 3
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