CVE-2026-50403: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 11 Version 24H2
CVE-2026-50403 is a race condition vulnerability in Windows Runtime on Microsoft Windows 11 Version 24H2 that allows an authorized local attacker to elevate privileges. The flaw arises from improper synchronization during concurrent execution using a shared resource. This vulnerability has a high severity rating and a CVSS score of 7. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50403) involves a race condition (CWE-362) in Windows Runtime on Windows 11 Version 24H2 (build 10.0.26100.0). It allows an authorized local attacker to elevate privileges by exploiting improper synchronization when accessing shared resources concurrently. The issue is addressed by an official patch from Microsoft as detailed in their security advisory.
Potential Impact
Successful exploitation of this vulnerability could allow an authorized local attacker to gain elevated privileges, potentially leading to full system compromise. The CVSS v3.1 base score is 7.0, indicating high severity with impacts on confidentiality, integrity, and availability. No known exploits are reported in the wild at this time.
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-2026-50403 to remediate this vulnerability.
CVE-2026-50403: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 11 Version 24H2
Description
CVE-2026-50403 is a race condition vulnerability in Windows Runtime on Microsoft Windows 11 Version 24H2 that allows an authorized local attacker to elevate privileges. The flaw arises from improper synchronization during concurrent execution using a shared resource. This vulnerability has a high severity rating and a CVSS score of 7. An official fix is available from Microsoft.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50403) involves a race condition (CWE-362) in Windows Runtime on Windows 11 Version 24H2 (build 10.0.26100.0). It allows an authorized local attacker to elevate privileges by exploiting improper synchronization when accessing shared resources concurrently. The issue is addressed by an official patch from Microsoft as detailed in their security advisory.
Potential Impact
Successful exploitation of this vulnerability could allow an authorized local attacker to gain elevated privileges, potentially leading to full system compromise. The CVSS v3.1 base score is 7.0, indicating high severity with impacts on confidentiality, integrity, and availability. No known exploits are reported in the wild at this time.
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-2026-50403 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:56:53.258Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50403","vendor":"Microsoft"}]
Threat ID: 6a56769a68715ace43f090e0
Added to database: 07/14/2026, 17:49:14 UTC
Last enriched: 07/15/2026, 00:02:56 UTC
Last updated: 07/15/2026, 00:02:56 UTC
Views: 2
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