CVE-2025-15561
HighSummary
A vulnerability in the WorkTime monitoring daemon allows a local attacker to elevate privileges to NT Authority\SYSTEM. The attack requires placing a malicious executable named WTWatch.exe in the C:\ProgramData\wta\ClientExe directory, which is writable by Everyone. The executable is then executed by the WorkTime daemon.
Risk Assessment
The organization is at risk of full system compromise by a local attacker, potentially leading to data theft, malware installation, or lateral movement within the network.
Recommendation
Immediately update WorkTime software to a version that fixes this vulnerability. Until then, restrict permissions on the C:\ProgramData\wta\ClientExe directory by removing write access for the Everyone group.
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Original NVD description (English source)
An attacker can exploit the update behavior of the WorkTime monitoring daemon to elevate privileges on the local system to NT Authority\SYSTEM. A malicious executable must be named WTWatch.exe and dropped in the C:\ProgramData\wta\ClientExe directory, which is writable by "Everyone". The executable will then be run by the WorkTime monitoring daemon.