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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2025-15559

Unauthenticated OS Command Injection in NesterSoft WorkTime

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

NesterSoft Inc. WorkTime (on-prem/cloud)

Default version status: unknown

  • <= 11.8.8affected

References