CVE-2026-20853: 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 WalletService allows an unauthorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a race condition (CWE-362) in the Windows WalletService on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization when accessing shared resources can be exploited by a local attacker to elevate privileges. The vulnerability is confirmed and published with a CVSS 3.1 score of 7.4, indicating high impact on confidentiality, integrity, and availability. The vendor has released a patch to remediate this issue.
Potential Impact
Successful exploitation allows an unauthorized local attacker to elevate privileges on the affected system, potentially gaining higher-level access and control. This impacts confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. Users and administrators should apply the official update from Microsoft to Windows 10 Version 1607 to remediate the race condition in the WalletService. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-20853: 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 WalletService allows an unauthorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition (CWE-362) in the Windows WalletService on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization when accessing shared resources can be exploited by a local attacker to elevate privileges. The vulnerability is confirmed and published with a CVSS 3.1 score of 7.4, indicating high impact on confidentiality, integrity, and availability. The vendor has released a patch to remediate this issue.
Potential Impact
Successful exploitation allows an unauthorized local attacker to elevate privileges on the affected system, potentially gaining higher-level access and control. This impacts confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. Users and administrators should apply the official update from Microsoft to Windows 10 Version 1607 to remediate the race condition in the WalletService. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.377Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae0a60475309f9ae0fb
Added to database: 1/13/2026, 6:11:44 PM
Last enriched: 4/3/2026, 12:45:43 PM
Last updated: 5/7/2026, 11:06:54 AM
Views: 81
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.