CVE-2026-20927: 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 deny service over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20927) involves a race condition (CWE-362) in the Windows SMB Server on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization when accessing shared resources allows an authorized attacker to trigger a denial of service condition remotely over the network. The CVSS 3.1 vector indicates the attack requires network access with high attack complexity and low privileges, but no user interaction. The impact is limited to availability (denial of service).
Potential Impact
An authorized attacker can exploit this race condition vulnerability to cause a denial of service on the affected Windows 10 Version 1607 system via the SMB Server. There is no impact on confidentiality or integrity. No known exploits are reported 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. Since this is not a cloud service, remediation depends on applying the patch on affected systems. No additional vendor advisory content is provided, so check Microsoft’s official security update channels for the specific patch.
CVE-2026-20927: 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 deny service over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20927) involves a race condition (CWE-362) in the Windows SMB Server on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization when accessing shared resources allows an authorized attacker to trigger a denial of service condition remotely over the network. The CVSS 3.1 vector indicates the attack requires network access with high attack complexity and low privileges, but no user interaction. The impact is limited to availability (denial of service).
Potential Impact
An authorized attacker can exploit this race condition vulnerability to cause a denial of service on the affected Windows 10 Version 1607 system via the SMB Server. There is no impact on confidentiality or integrity. No known exploits are reported 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. Since this is not a cloud service, remediation depends on applying the patch on affected systems. No additional vendor advisory content is provided, so check Microsoft’s official security update channels for the specific patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-04T20:04:16.336Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae3a60475309f9ae1d5
Added to database: 1/13/2026, 6:11:47 PM
Last enriched: 4/3/2026, 12:49:53 PM
Last updated: 5/9/2026, 4:34:48 AM
Views: 151
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