HIGH Microsoft Corporation Vulnerability Alert

Product:

Windows Local Session Manager

Summary

A race condition in Windows Local Session Manager allows an authorized attacker to elevate privileges locally. This occurs due to improper synchronization when executing concurrent processes that share resources. The vulnerability can lead to significant security risks if exploited.

Details

Severity Base Score CVE
HIGH 7 CVE-2026-20869

Exploitation

To exploit this vulnerability, an attacker must have local access to the system and be able to execute code. By taking advantage of the race condition, the attacker can manipulate the execution flow to gain elevated privileges, potentially allowing them to perform unauthorized actions on the system.

Affected Products

  • Windows Local Session Manager: Vulnerable to privilege escalation due to improper synchronization in concurrent execution.

Mitigation

To mitigate this vulnerability, it is recommended to apply the latest security updates provided by Microsoft. Additionally, restricting local access to sensitive systems can help reduce the risk of exploitation.

References