CVE-2025-0994Trimble Cityworks versions prior to 15.8.9 and Cityworks with office companion versions prior to 23.10 are vulnerable to a deserialization…
- 8.6HighCVSS base score
- 35.2%Exploitation in 30 daysEPSS · top 1.5% of all CVEs
- YesKnown exploitedin CISA's KEV since 7 Feb 2025
- YesPublic exploitsa reference or SSVC says so
Description
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Trimble Cityworks Deserialization Vulnerability.
- Added
- 7 Feb 2025
- Fix due (US federal)
- 28 Feb 2025
- Used by ransomware
- Not known
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 7 Feb 2025.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By icscert
- 3 days later
· 3 days later
Published
- 1 day later
· 1 day later
Added to CISA KEV
Known exploited in the wild
- 9 months later
· 9 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| icscertCNA (assigner) | 4.0 | High8.6 | 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 |
| NVDNVD · Analyzed | 4.0 | High8.6 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 35.2% · top 1.5% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.
Affected products
- affected < 15.8.9
Trimble · Cityworks (with office companion)
- affected < 23.10
What to do
Solution: Trimble will be releasing updated versions to both 15.x (15.8.9 available January 28, 2025) and Cityworks 23.x software releases (23.10 available January 29, 2025). Information on the updated versions will be available through the normal channels via the [Cityworks Support Portal]( https://cityworks.my.site.com/)(Login required). On-premise customers should install the updated version immediately. These updates will be automatically applied to all Cityworks Online (CWOL) deployments.
Workaround: Trimble has observed that some on-premise deployments may have overprivileged Internet Information Services (IIS) identity permissions. For avoidance of doubt, and in accordance with Trimble's technical documentation, IIS should not be run with local or domain level administrative privileges on any site. Please refer to the direction in the latest release notes in the [Cityworks Support Portal]( https://cityworks.my.site.com/)(Login required) for more information on how to update IIS identity permissions. Trimble's CWOL customers have their IIS identity permissions set appropriately and do not need to take this action. Trimble has observed that some deployments have inappropriate attachment directory configurations. Trimble recommends that attachment directory root configuration should be limited to folders/subfolders which only contain attachments. Please refer to the direction in the latest release notes in the [Cityworks Support Portal]( https://cityworks.my.site.com/)(Login required) for more information on how to ensure proper configuration of the attachment directory.
Exploitation: CISA has received reports of this vulnerability being actively exploited.
References
References3
- https://www.cisa.gov/news-events/ics-advisories/icsa-25-037-04 (opens in a new tab)government-resourcethird-party-advisory
- https://learn.assetlifecycle.trimble.com/i/1532182-cityworks-customer-communication-2025-02-05-docx/0? (opens in a new tab)vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-0994 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-1955 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-0994)Record last updated .