CVE-2026-20869: 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 Local Session Manager (LSM) allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a concurrent execution flaw (CWE-362) in Windows 10 Version 1607's Local Session Manager. Improper synchronization of shared resources can be exploited by an authorized local user to gain elevated privileges. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges, but no user interaction. Successful exploitation impacts confidentiality, integrity, and availability with high severity. Microsoft has released a patch to remediate this issue.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected Windows 10 Version 1607 system. This could lead to full system compromise, affecting 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. It is recommended to apply the official Microsoft update for Windows 10 Version 1607 to remediate this race condition vulnerability in the Local Session Manager. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-20869: 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 Local Session Manager (LSM) allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a concurrent execution flaw (CWE-362) in Windows 10 Version 1607's Local Session Manager. Improper synchronization of shared resources can be exploited by an authorized local user to gain elevated privileges. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges, but no user interaction. Successful exploitation impacts confidentiality, integrity, and availability with high severity. Microsoft has released a patch to remediate this issue.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected Windows 10 Version 1607 system. This could lead to full system compromise, affecting 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. It is recommended to apply the official Microsoft update for Windows 10 Version 1607 to remediate this race condition vulnerability in the Local Session Manager. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.381Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae0a60475309f9ae13f
Added to database: 1/13/2026, 6:11:44 PM
Last enriched: 4/3/2026, 12:47:36 PM
Last updated: 5/10/2026, 9:28:15 AM
Views: 124
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