# CVE-2025-0994 — Trimble Cityworks **CISA KEV** > As of 2025-10-21, CVE-2025-0994 is a HIGH-severity vulnerability in Trimble Cityworks, CVSS v3.1 8.8, EPSS 31.0% (98.2th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-02-07), with a US federal remediation deadline of 2025-02-28. Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2025-0994, most recently “Rapid7 Q3 2026 Threat Landscape: High-Severity Flaws Exploited in 3 Days as The Gentlemen and Qilin Ransomware Dominate”. **Last updated:** 2025-10-21 ## 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](https://intel.threadlinqs.com/cwe/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](https://github.com/rxerium/CVE-2025-0994) (github) - [trickest/cve](https://github.com/trickest/cve/blob/main/2025/CVE-2025-0994.md) (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?](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](https://intel.threadlinqs.com/threat/TL-2026-4043) — 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](https://intel.threadlinqs.com/threat/TL-2026-0462) — 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 2026-10-10. This product uses the NVD API but is not endorsed or certified by the NVD. **Vendor advisory and patch** - [learn.assetlifecycle.trimble.com — vendor advisory](https://learn.assetlifecycle.trimble.com/i/1532182-cityworks-customer-communication-2025-02-05-docx/0?) **Third-party advisory** - [cisa.gov — government resource](https://www.cisa.gov/news-events/ics-advisories/icsa-25-037-04) Canonical: https://intel.threadlinqs.com/cve/CVE-2025-0994 Full detection coverage and IOCs for threats exploiting CVE-2025-0994 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp