CVE-2024-13961: Avast Cleanup Premium

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Link Following Local Privilege Escalation Vulnerability in TuneupSvc in Avast Cleanup Premium Version 24.2.16593.17810 on Windows 10 Pro x64 allows local attackers to escalate privileges and execute arbitrary code in the context of SYSTEM via creating a symbolic link and leveraging a TOCTTOU (time-of-check to time-of-use) attack.

Affected products

• Avast Cleanup Premium: version 24.2.16593.17810 only

Published 2025-05-09. Last modified 2026-06-17.