SB20260414127 - Privilege escalation in Microsoft Applocker Filter Driver (applockerfltr.sys)
Published: April 14, 2026
Security Bulletin ID
SB20260414127
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Race condition (CVE-ID: CVE-2026-25184)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in Applocker Filter Driver (applockerfltr.sys). A local user can exploit the race and escalate privileges on the system.
Remediation
Install update from vendor's website.