New Windows Task Scheduler Bugs Let Attackers Bypass UAC and Tamper with Logs
Apr 16, 2025
Endpoint Security / Vulnerability
Cybersecurity researchers have detailed four different vulnerabilities in a core component of the Windows task scheduling service that could be exploited by local attackers to achieve privilege escalation and erase logs to cover up evidence of malicious activities. The issues have been uncovered in a binary named " schtasks.exe ," which enables an administrator to create, delete, query, change, run, and end scheduled tasks on a local or remote computer. "A [User Account Control] bypass vulnerability has been found in Microsoft Windows, enabling attackers to bypass the User Account Control prompt, allowing them to execute high-privilege (SYSTEM) commands without user approval," Cymulate security researcher Ruben Enkaoua said in a report shared with The Hacker News. "By exploiting this weakness, attackers can elevate their privileges and run malicious payloads with Administrators' rights, leading to unauthorized access, data theft, or further system c...
