Trimble Cityworks Deserialization Vulnerability
Trimble — Cityworks
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.
8.6
31.3%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- High
- User interaction
- None
- Confidentiality (Vulnerable System)
- High
- Integrity (Vulnerable System)
- High
- Availability (Vulnerable System)
- High
- Confidentiality (Subsequent System)
- None
- Integrity (Subsequent System)
- None
- Availability (Subsequent System)
- None
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Published
- Feb 6, 2025
- Modified
- Oct 21, 2025
- Added to KEV
- Feb 7, 2025
- Federal patch due
- Feb 28, 2025
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2025-0994, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2025-0994 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2025-0994?
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.
How severe is CVE-2025-0994?
CVE-2025-0994 has a CVSS base score of 8.6 out of 10 (CVSS 4.0).
Is CVE-2025-0994 actively exploited in the wild?
Yes. CVE-2025-0994 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Feb 7, 2025, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2025-0994?
31.3% - meaning FIRST.org's EPSS model estimates a 31.3% probability this vulnerability will be exploited in the wild within 30 days (98% percentile among all scored CVEs).
What type of vulnerability is CVE-2025-0994?
CVE-2025-0994 is classified under CWE-502 (CWE-502 Deserialization of Untrusted Data).
Cross-checked against
Impactr finds and proves whether CVE-2025-0994 - or flaws like it - are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.
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