CVE-2024-13961

Avast Cleanup Premium TuneupSvc Link Following Local Privilege Escalation Vulnerability

Published May 9, 2025 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Update to Avast Cleanup Premium 24.3.17165.19178 or newer

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-54468 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Avast Cleanup Premium TuneupSvc Link Following Local Privilege Escalation Vulnerability
Weaknesses CWE-367
CWE-59
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
NLOK
Published
Updated
May 9, 2025, 5:38 PM
Reserved
May 9, 2025, 2:44 PM
Status
Deferred
Published
May 9, 2025, 4:15 PM
Modified
Jun 17, 2026, 7:03 AM