Critical Exploits Targeting Trimble Cityworks: What You Need to Know

Urgent Warning: Cybersecurity Risks from Trimble's Cityworks

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued a critical alert regarding a vulnerability within the Trimble Cityworks software, widely used for GIS-centric asset management. This flaw has garnered attention as it is currently under active exploitation, raising significant concerns among organizations relying on this system.

Understanding the Vulnerability: Code Execution Threat

Known as CVE-2025-0994, this vulnerability has a high CVSS score of 8.6, indicating its severity. The issue arises from a deserialization of untrusted data flaw, allowing authenticated users to execute remote code on a customer's Microsoft Internet Information Services (IIS) web server. Such an exploit could have devastating effects, allowing attackers to gain unauthorized access and control over critical systems.

Impact and Immediate Actions Required

The vulnerability affects all versions of Cityworks prior to 15.8.9 and those using Cityworks with office companion prior to version 23.10. Trimble released patches on January 29, 2025, yet CISA's advisory highlights that the flaw is actively being weaponized, with reports of unauthorized access to specific deployments.

Tracking the Exploits: Tools and Techniques Used

Compromised systems are reportedly being targeted by malware such as a Rust-based loader deploying the notorious Cobalt Strike and a Go-based remote access tool named VShell. As the nature of these attacks evolves, organizations must be vigilant about applying software updates and monitoring for any signs of unauthorized activity.

Conclusion: Staying Ahead of Cyber Threats

In light of this alarming situation, organizations utilizing Trimble Cityworks must enhance their cybersecurity measures to avoid falling victim to ongoing exploits. Timely updates and awareness of security protocols are essential in safeguarding critical assets and maintaining system integrity.

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