CVE-2026-20919: 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 SMB Server allows an authorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability involves a race condition (CWE-362) in the Windows SMB Server on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization during concurrent access to shared resources can be exploited by an authorized attacker over the network to elevate privileges. The CVSS 3.1 vector indicates network attack vector, high attack complexity, low privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. The vulnerability is officially published and a patch is available.
Potential Impact
An authorized attacker who can access the Windows SMB Server over the network may exploit this race condition to elevate their privileges. This could lead to full system compromise including unauthorized access to sensitive information, modification of data, and disruption of service. The vulnerability affects Windows 10 Version 1607 (build 10.0.14393.0). There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 10 Version 1607 to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-20919: 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 SMB Server allows an authorized attacker to elevate privileges over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition (CWE-362) in the Windows SMB Server on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization during concurrent access to shared resources can be exploited by an authorized attacker over the network to elevate privileges. The CVSS 3.1 vector indicates network attack vector, high attack complexity, low privileges required, no user interaction, and high impact on confidentiality, integrity, and availability. The vulnerability is officially published and a patch is available.
Potential Impact
An authorized attacker who can access the Windows SMB Server over the network may exploit this race condition to elevate their privileges. This could lead to full system compromise including unauthorized access to sensitive information, modification of data, and disruption of service. The vulnerability affects Windows 10 Version 1607 (build 10.0.14393.0). There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 10 Version 1607 to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-04T20:04:16.335Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae1a60475309f9ae17e
Added to database: 1/13/2026, 6:11:45 PM
Last enriched: 4/3/2026, 12:48:36 PM
Last updated: 5/8/2026, 4:38:15 PM
Views: 91
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