CVE-2025-0994: Trimble Cityworks Deserialization Vulnerability

High severity, CVSS 8.8. Actively exploited: in CISA KEV since 2025-02-07. EPSS: 31.1% chance of exploitation in the next 30 days.

Trimble Cityworks versions prior to 15.8.9 and Cityworks with office companion versions prior to 23.10 are vulnerable to a deserialization vulnerability. This could allow an authenticated user to perform a remote code execution attack against a customer’s Microsoft Internet Information Services (IIS) web server.

Affected products

• Trimble Cityworks: before 15.8.9 (fixed in 15.8.9); from 23.0, before 23.10 (fixed in 23.10)

Published 2025-02-06. Last modified 2026-06-17.