SB2025120811 - Privilege escalation in Avast Antivirus
Published: December 8, 2025
Security Bulletin ID
SB2025120811
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) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2025-13032)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists de to a double fetch issue in sandbox kernel driver. A local user can execute arbitrary code with elevated privileges via pool overflow.
Remediation
Install update from vendor's website.