CVE-2024-13961 | BDVDB-2026-278014 Detail

AvastCleanUp Premium

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.

Impact#

CAPEC-233 Privilege Escalation

Weaknesses#

CWE-59 Improper Link Resolution Before File Access ('Link Following')
CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition

References#

https://www.gendigital.com/us/en/contact-us/security-advisories/

Exploit#

No public exploit known

History#

Version 12025-05-09Record published in the CVE List.

Published

Published: 2025-05-09
Last modified: 2025-05-09

Vendor information

Vendor: Avast
Product: CleanUp Premium

All Avast vulnerabilities

Score

7.8 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 6.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Race Condition

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
24.2.16593.17810
Fixed
Not stated
Vulnerable
Not stated
Fixed
24.3.17165.19178

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.8 High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).