CVE-2026-42979: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1809
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42979) involves a race condition (CWE-362) in the Windows Push Notifications component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). Improper synchronization during concurrent execution of shared resources can be exploited by an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected system, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the privileges gained. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Users and administrators should apply the update provided in the Microsoft security advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42979 to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-42979: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1809
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Push Notifications 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 (CVE-2026-42979) involves a race condition (CWE-362) in the Windows Push Notifications component of Microsoft Windows 10 Version 1809 (build 10.0.17763.0). Improper synchronization during concurrent execution of shared resources can be exploited by an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected system, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the privileges gained. The vulnerability affects confidentiality, integrity, and availability of the system.
Mitigation Recommendations
An official patch is available from Microsoft to remediate this vulnerability. Users and administrators should apply the update provided in the Microsoft security advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42979 to mitigate the risk. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T23:43:50.745Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42979","vendor":"Microsoft"}]
Threat ID: 6a284cc88dd33fbd856648df
Added to database: 6/9/2026, 5:26:32 PM
Last enriched: 6/9/2026, 10:56:36 PM
Last updated: 6/10/2026, 6:27:12 AM
Views: 5
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