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Link Following Local Privilege Escalation Vulnerability in TuneupSvc in Gen Digital Inc. 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.
Reserved 2025-05-09 | Published 2025-05-09 | Updated 2025-05-09 | Assigner NLOKCWE-59 Improper Link Resolution Before File Access ('Link Following')
Vladislav Berghici of Trend Micro
Zero Day Initiative
www.gendigital.com/us/en/contact-us/security-advisories/
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