Vulnerability · Published May 9, 2025 · Assigned by NLOK
CVE-2024-13961Avast Cleanup Premium TuneupSvc Link Following Local Privilege Escalation Vulnerability
High 7.8
In plain English
A high-severity security flaw in CleanUp Premium from Avast. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 93.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Avast | CleanUp Premium | 24.2.16593.17810 |
Weakness: CWE-59, CWE-367 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H