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.
The record classifies CVE-2025-0994 under weakness class CWE-502. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 623 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 8.8 — HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v4.0 base score
- 8.6
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 - EPSS (FIRST)
- 31.0% probability of exploitation in the next 30 days, higher than 98.2% of all scored CVEs
- CISA KEV
- Listed since 2025-02-07, federal remediation deadline 2025-02-28
- Threadlinqs priority
- 9/10 — CISA KEV-listed, which Threadlinqs floors at 9
- Published
- 2025-02-06, last modified 2025-10-21
Is CVE-2025-0994 being exploited?
CISA added CVE-2025-0994 to the Known Exploited Vulnerabilities catalog on 2025-02-07, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2025-02-28 under BOD 22-01. Weaponised exploit code for CVE-2025-0994 is publicly available. 2 public proof-of-concept repositories are tracked for this identifier. It currently carries a trending score of 53 in the Threadlinqs vulnerability feed.
- rxerium/CVE-2025-0994 (github)
- trickest/cve (trickest)
Affected products and versions
- Trimble: Cityworks, Cityworks (with office companion)
How to fix CVE-2025-0994
Vendor advisory: https://learn.assetlifecycle.trimble.com/i/1532182-cityworks-customer-communication-2025-02-05-docx/0?. Because CVE-2025-0994 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2025-02-28. Apply the vendor fix referenced above to every affected product listed in this record, then confirm the running version against the vendor advisory.
Threat activity tracking CVE-2025-0994
2 tracked threats in the Threadlinqs corpus reference CVE-2025-0994, either in the campaign’s CVE list or as an indicator on the campaign record.
- Rapid7 Q3 2026 Threat Landscape: High-Severity Flaws Exploited in 3 Days as The Gentlemen and Qilin Ransomware Dominate — HIGH · 2026-10-21
- UAT-8302 China-Nexus APT Campaign — NetDraft, CloudSorcerer v3, VSHELL/SNOWLIGHT, SNOWRUST, SNAPPYBEE/DeedRAT, ZingDoor, and Draculoader Targeting Government Entities in South America and Southeastern Europe — HIGH · 2026-05-05
Sources
Enriched from CVE.org, NVD, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories. Last verified by Threadlinqs on . This product uses the NVD API but is not endorsed or certified by the NVD.