The U.S. Cybersecurity and Infrastructure Safety Company (CISA) has warned {that a} security flaw impacting Trimble Cityworks GIS-centric asset administration software program has come beneath energetic exploitation within the wild.
The vulnerability in query is CVE-2025-0994 (CVSS v4 rating: 8.6), a deserialization of untrusted knowledge bug that might allow an attacker to conduct distant code execution.
“This might permit an authenticated person to carry out a distant code execution assault in opposition to a buyer’s Microsoft Web Data Companies (IIS) internet server,” CISA stated in an advisory dated February 6, 2025.
The flaw impacts the next variations –
- Cityworks (All variations prior to fifteen.8.9)
- Cityworks with workplace companion (All variations previous to 23.10)

Whereas Trimble has launched patches to handle the security defect as of January 29, 2025, CISA has warned that it’s being weaponized in real-world assaults.
The Colorado-headquartered firm additionally famous that it has acquired studies of “unauthorized makes an attempt to realize entry to particular prospects’ Cityworks deployments.”
Indicators of compromise (IoCs) launched by Trimble present that the vulnerability is being exploited to drop a Rust-based loader that launches Cobalt Strike and a Go-based distant entry instrument named VShell, amongst different unidentified payloads.
It is at the moment not recognized who’s behind the assaults, and what the tip objective of the marketing campaign is. Customers working affected variations of the software program are suggested to replace their cases to the most recent model for optimum safety.