CVE-2026-26181: CWE-416: Use After Free in Microsoft Windows 11 version 22H3
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-26181) involves a use-after-free condition in the Microsoft Brokering File System on Windows 11 version 22H3 (build 10.0.22631.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 11 system. This could allow the attacker to gain higher-level access than intended, potentially compromising system confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate this issue. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26181 for detailed patch information and guidance.
CVE-2026-26181: CWE-416: Use After Free in Microsoft Windows 11 version 22H3
Description
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26181) involves a use-after-free condition in the Microsoft Brokering File System on Windows 11 version 22H3 (build 10.0.22631.0). Exploitation requires local access with some privileges and does not require user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 11 system. This could allow the attacker to gain higher-level access than intended, potentially compromising system confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate this issue. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26181 for detailed patch information and guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T18:33:57.777Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26181","vendor":"Microsoft"}]
Threat ID: 69de7a1d82d89c981fd6a71c
Added to database: 04/14/2026, 17:32:13 UTC
Last enriched: 06/19/2026, 17:00:54 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 104
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