Security Digest · Vulnerability record · Known exploited
CVE-2025-0994: Trimble Cityworks Deserialization Vulnerability
Exploited in the wild (CISA KEV). Trimble Cityworks versions prior to 15.8.9 and Cityworks with office companion versions prior to 23.10 are vulnerable to a deserialization vulnerability.
CISA KEV · added 2025-02-07 CVSS 8.6 High EPSS 31.1% · p98
Should you act?
Exploited: patch now if you run it
CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Yes, if you run Trimble Cityworks. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-02-07, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-02-28; treat that as the outer limit, not the target.
- EPSS 31.1%, percentile 98: FIRST’s model estimates a 31.1% chance of exploitation activity in the next 30 days, higher than 98% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Needs an account (high (admin)). Exposure depends on who can log in.
What it is
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.
CISA’s summary
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.
Weakness type: CWE-502.
Product: Trimble Cityworks · Assigned by: icscert · Published: 2025-02-06
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Trimble | Cityworks | < 15.8.9 |
| Trimble | Cityworks (with office companion) | < 23.10 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| icscert | 4.0 | 8.6 High | 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 |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Attack requirements: none
- Privileges required: high (admin)
- User interaction: none
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: added 2025-02-07; federal due date 2025-02-28. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active, automatable no, technical impact total.
- FIRST EPSS (model of 2026-10-21): 31.09% probability of exploitation activity in the next 30 days; percentile 98.
Timeline
- — CVE record published by icscert
- — Added to CISA’s Known Exploited Vulnerabilities catalog
- — CISA remediation deadline for US federal agencies
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- learn.assetlifecycle.trimble.com learn.assetlifecycle.trimble.com
Vulnerability records
- CVE.org record CVE-2025-0994 cve.org
- NVD entry CVE-2025-0994 nvd.nist.gov
Government
All exploited Trimble vulnerabilities · Today’s Security Digest