CVE-2026-27924: CWE-416: Use After Free in Microsoft Windows 10 Version 21H2
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the Desktop Window Manager on Windows 10 Version 21H2 (build 10.0.19044.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The vulnerability is tracked as CWE-416 and has a CVSS 3.1 score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation allows a local attacker with existing privileges to elevate their privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. No public exploits are currently known, reducing immediate risk, but the high severity indicates significant potential impact if exploited.
Mitigation Recommendations
An official fix is available from Microsoft. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27924 to remediate this vulnerability. No additional mitigations are specified by the vendor.
CVE-2026-27924: CWE-416: Use After Free in Microsoft Windows 10 Version 21H2
Description
Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the Desktop Window Manager on Windows 10 Version 21H2 (build 10.0.19044.0). An authorized attacker with local access can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The vulnerability is tracked as CWE-416 and has a CVSS 3.1 score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation allows a local attacker with existing privileges to elevate their privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. No public exploits are currently known, reducing immediate risk, but the high severity indicates significant potential impact if exploited.
Mitigation Recommendations
An official fix is available from Microsoft. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27924 to remediate this vulnerability. No additional mitigations are specified by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-24T21:35:49.687Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27924","vendor":"Microsoft"}]
Threat ID: 69de7a2482d89c981fd6b9f9
Added to database: 4/14/2026, 5:32:20 PM
Last enriched: 5/19/2026, 10:39:00 AM
Last updated: 5/29/2026, 11:29:17 AM
Views: 51
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