CVE-2025-15559

Unauthenticated OS Command Injection in NesterSoft WorkTime

CVSS 9.8 CRITICALEPSS 0.4%CWE-78

Vexday Risk Score

28Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 9.8EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

19 feb 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

An unauthenticated attacker can inject OS commands when calling a server API endpoint in NesterSoft WorkTime. The server API call to generate and download the WorkTime client from the WorkTime server is vulnerable in the “guid” parameter. This allows an attacker to execute arbitrary commands on the WorkTime server as NT Authority\SYSTEM with the highest privileges. Attackers are able to access or manipulate sensitive data and take over the whole server.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Productos afectados

NesterSoft Inc. · WorkTime (on-prem/cloud)

Referencias

https://r.sec-consult.com/worktime