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 (CVE-2026-27924) involves a use-after-free condition in the Desktop Window Manager of Windows 10 Version 21H2 (build 10.0.19044.0). An authorized local attacker can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The CVSS 3.1 vector indicates the attack requires local access with low complexity and no user interaction, affecting confidentiality, integrity, and availability with high impact. Microsoft has published an official patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows a local attacker with authorized access to elevate privileges, potentially gaining administrative control over the affected system. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system availability.
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-2026-27924 to remediate this vulnerability. No additional mitigation steps are indicated 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-27924) involves a use-after-free condition in the Desktop Window Manager of Windows 10 Version 21H2 (build 10.0.19044.0). An authorized local attacker can exploit this flaw to elevate their privileges, potentially gaining higher system rights. The CVSS 3.1 vector indicates the attack requires local access with low complexity and no user interaction, affecting confidentiality, integrity, and availability with high impact. Microsoft has published an official patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows a local attacker with authorized access to elevate privileges, potentially gaining administrative control over the affected system. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system availability.
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-2026-27924 to remediate this vulnerability. No additional mitigation steps are indicated 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: 4/14/2026, 6:47:36 PM
Last updated: 4/15/2026, 6:03:48 AM
Views: 3
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