CVE-2026-20808: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 11 Version 24H2
Concurrent execution using shared resource with improper synchronization ('race condition') in Printer Association Object allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20808) involves a race condition (CWE-362) in the Printer Association Object component of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). The flaw arises from improper synchronization during concurrent execution using shared resources, enabling an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.0, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as detailed in their security update guide.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected Windows 11 system. This can lead to full system compromise, affecting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix for this vulnerability 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-2026-20808 to remediate this issue.
CVE-2026-20808: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 11 Version 24H2
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Printer Association Object 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 (CVE-2026-20808) involves a race condition (CWE-362) in the Printer Association Object component of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). The flaw arises from improper synchronization during concurrent execution using shared resources, enabling an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.0, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as detailed in their security update guide.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected Windows 11 system. This can lead to full system compromise, affecting confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official fix for this vulnerability 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-2026-20808 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.372Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20808","vendor":"Microsoft"}]
Threat ID: 69668adaa60475309f9adf3d
Added to database: 01/13/2026, 18:11:38 UTC
Last enriched: 07/30/2026, 23:50:34 UTC
Last updated: 09/10/2026, 19:24:58 UTC
Views: 189
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