CVE-2025-15561
Local Privilege Escalation in NesterSoft WorkTime
Description
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.
INFO
Published Date :
Feb. 19, 2026, 10:53 a.m.
Last Modified :
Feb. 19, 2026, 10:53 a.m.
Remotely Exploit :
No
Source :
SEC-VLab
Affected Products
The following products are affected by CVE-2025-15561
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Restrict permissions on C:\ProgramData\wta\ClientExe.
- Ensure WTWatch.exe is signed by a trusted publisher.
- Monitor the ClientExe directory for unauthorized files.
- Review daemon update and execution processes.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-15561 vulnerability anywhere in the article.