CVE-2026-97812: CWE-415: Double Free in Microsoft Windows 10 Version 21H2
Description
Double free in Windows Update Orchestrator Service allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows 11 Version 26H2
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a double free condition in the Windows Update Orchestrator Service component of Microsoft Windows 10 Version 21H2. Exploitation requires local authorized access and can result in privilege escalation. The issue is tracked as CWE-415 (Double Free). Multiple specific Windows 10 build versions are affected, and Microsoft has released an official fix to address the vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges on the affected system. The CVSS vector indicates high impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97812. No additional mitigation actions are required beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-25T04:41:33.500Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97812","vendor":"Microsoft"}]
Threat ID: 6ace85972cdf04f656a01ab7
Added to database: 10/13/2026, 19:25:11 UTC
Last enriched: 10/13/2026, 19:33:44 UTC
Last updated: 10/14/2026, 02:48:33 UTC
Views: 8
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