CVE-2026-42900: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability involves a race condition (CWE-362) in the Windows App Store on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization of shared resources during concurrent execution can be exploited by an attacker over a network to elevate privileges. Microsoft has published an official fix addressing this issue.
Potential Impact
Successful exploitation allows an unauthorized attacker to elevate privileges remotely, potentially gaining higher-level access on the affected system. This could lead to full system compromise depending on the privileges gained.
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-2026-42900 to remediate this vulnerability.
CVE-2026-42900: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition (CWE-362) in the Windows App Store on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization of shared resources during concurrent execution can be exploited by an attacker over a network to elevate privileges. Microsoft has published an official fix addressing this issue.
Potential Impact
Successful exploitation allows an unauthorized attacker to elevate privileges remotely, potentially gaining higher-level access on the affected system. This could lead to full system compromise depending on the privileges gained.
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-2026-42900 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T22:35:54.967Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42900","vendor":"Microsoft"}]
Threat ID: 6a566f6768715ace43e6b308
Added to database: 07/14/2026, 17:18:31 UTC
Last enriched: 08/13/2026, 14:15:00 UTC
Last updated: 08/25/2026, 22:52:11 UTC
Views: 38
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.