CVE-2026-26172: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 21H2
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-2026-26172) involves a race condition (CWE-362) in the Windows Push Notifications component of Microsoft Windows 10 Version 21H2 (build 10.0.19044.0). The flaw arises from improper synchronization when multiple threads access shared resources concurrently, which can be exploited by an authorized local attacker to elevate privileges. Microsoft has published an official fix for this vulnerability. No known exploits are reported in the wild at this time.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges on the affected system. This can lead to complete compromise of confidentiality, integrity, and availability of the system as indicated by the CVSS vector (C:H/I:H/A:H).
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-2026-26172 to remediate this vulnerability.
CVE-2026-26172: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 21H2
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
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26172) involves a race condition (CWE-362) in the Windows Push Notifications component of Microsoft Windows 10 Version 21H2 (build 10.0.19044.0). The flaw arises from improper synchronization when multiple threads access shared resources concurrently, which can be exploited by an authorized local attacker to elevate privileges. Microsoft has published an official fix for this vulnerability. No known exploits are reported in the wild at this time.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges on the affected system. This can lead to complete compromise of confidentiality, integrity, and availability of the system as indicated by the CVSS vector (C:H/I:H/A:H).
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-2026-26172 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T18:33:57.776Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26172","vendor":"Microsoft"}]
Threat ID: 69de7a1b82d89c981fd6a6ca
Added to database: 04/14/2026, 17:32:11 UTC
Last enriched: 06/19/2026, 17:00:03 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 136
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