Time-of-check Time-of-use (TOCTOU) Race Condition in Avast Antivirus - CVE-2025-13032
Published: December 8, 2025
Vulnerability identifier: #VU119251
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-13032
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Avast Antivirus
How to mitigate CVE-2025-13032
Install updates from vendor's website.
Avast Antivirus - update to 25.3.9983