---
id: "CVE-2025-0994"
kind: "vulnerability"
aliases: ["CVE-2025-0994"]
title: "Trimble Cityworks versions prior to 15.8.9 and Cityworks with office companion versions prior to 23.10 are\u2026"
severity: "high"
cvss: 8.8
epss: null
exploited: true
status: "open"
category: "vendor"
products: [{"name": "trimble cityworks", "fixed": ["15.8.9"], "affected": "< 15.8.9", "ecosystem": "vendor"}, {"name": "trimble cityworks", "fixed": ["23.10"], "affected": ">= 23.0, < 23.10", "ecosystem": "vendor"}, {"name": "Trimble Cityworks", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["cityworks", "exploited", "iis", "trimble", "vendor", "windows"]
not_affected_if: ["auth-required", "not-running-cityworks"]
published_at: "2025-02-06T16:15:41+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-24T00:09:50+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-0994", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-0994", "first_seen_at": "2026-10-23T22:29:05+00:00"}]
---

# Trimble Cityworks versions prior to 15.8.9 and Cityworks with office companion versions prior to 23.10 are…

Trimble Cityworks, a GIS-based asset management product for local governments, has a deserialization flaw that lets an authenticated user run code on the server. The attacker gets remote code execution on the customer's Microsoft IIS web server.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:trimble cityworks affected < 15.8.9 fixed 15.8.9
- vendor:trimble cityworks affected >= 23.0, < 23.10 fixed 23.10
- vendor:Trimble Cityworks affected ? fixed ?

## Fix

Apply the mitigations from the Trimble vendor advisory, or stop using Cityworks if no mitigation is available (per CISA required action). Fixed version: unknown.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-0994
- 2026-10-23T22:29:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-0994

## From the sources

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.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_