CVE-2025-15559
Critical · 9.8CVSS
9.8
EPSS
0.5%
Published
Feb 19, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-96376 Improper Neutralization of Special Elements used in an OS Command ("OS Command… CWE-78
- CVE-2026-113732 virtualenv is a tool for creating isolated virtual python environments. CWE-78
- CVE-2026-113776 virtualenv is a tool for creating isolated virtual python environments. CWE-78
- CVE-2026-113726 virtualenv is a tool for creating isolated virtual python environments. CWE-78
- CVE-2026-113725 virtualenv is a tool for creating isolated virtual python environments. CWE-78
- CVE-2026-113722 virtualenv is a tool for creating isolated virtual python environments. CWE-78
- CVE-2026-112943 launch-editor allows users to open files with line numbers in editor from Node.js. CWE-78
- CVE-2026-112900 Pillow is a Python imaging library. CWE-78