What’s Vulnerable › Vulnerabilities
CVE-2025-15561: Local Privilege Escalation in NesterSoft WorkTime
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-02-19 · updated 2026-06-17
- Weakness: CWE-269
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.
Affected products
- NesterSoft Inc. WorkTime (on-prem/cloud): through 11.8.8
References
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