CVE-2025-15559 — Unauthenticated OS Command Injection in NesterSoft WorkTime
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 fr…
Published: 2026-02-19 · CVSS: 9.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7