CVE-2025-0994 Trimble Cityworks: unsafe data loading
In plain words: The program unpacks saved data from outside without checking it is safe. Usually lets an attacker run code on the server.
Confirmed exploited by CISA on · US federal patch deadline Feb 28, 2025
What to do
- Install Trimble's security update for Cityworks. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- Trimble Cityworks Deserialization Vulnerability
- Product
- Trimble Cityworks
- CISA description
- Trimble Cityworks contains 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.
- Type of flaw
- Unsafe data loading (CWE-502)
- Confirmed exploited
- Feb 7, 2025
- US federal patch deadline
- Feb 28, 2025
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Answering about CVE-2025-0994 ·
Questions about CVE-2025-0994
Is CVE-2025-0994 being exploited?
Yes. CISA added CVE-2025-0994 to its Known Exploited Vulnerabilities catalog on Feb 7, 2025, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2025-0994?
Install Trimble's security update for Cityworks. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2025-0994?
Only if you use Trimble Cityworks. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.