---
id: "CVE-2025-43867"
page: "https://infrastack.ai/live/CVE-2025-43867"
kind: "vulnerability"
aliases: ["CVE-2025-43867"]
title: "Johnson Controls FX building controllers: vulnerable third-party component lets attackers modify files"
severity: "high"
cvss: 8.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["building-automation", "fx-server", "fx80", "fx90", "infrastructure", "johnson-controls"]
not_affected_if: ["fixed-version"]
published_at: "2026-11-13T21:17:35+00:00"
first_seen_at: "2026-11-13T21:33:40+00:00"
updated_at: "2026-11-13T21:33:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-43867", "first_seen_at": "2026-11-13T21:33:40+00:00"}]
exploit_sources: []
---

# Johnson Controls FX building controllers: vulnerable third-party component lets attackers modify files

Link for people: https://infrastack.ai/live/CVE-2025-43867 (this .md is for agents)

Johnson Controls FX Server, FX80 and FX90 building automation controllers ship a vulnerable third-party component. The sources say an attacker can access, modify or delete files on the device.

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

## How to check

- Identify FX Server, FX80 or FX90 devices and their firmware or server version in the building management inventory
- Compare the installed version against the fixed ranges listed under Fix

## Fix

- FX Server: `14.10.10` for the 14.10 line and `14.14.1` for the 14.14 line
- FX80: `14.14.10` and `14.14.1`
- FX90: `14.10.10` and `14.14.1`

## Timeline

- 2026-11-13T21:33:40+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-43867

## From the sources

- Dependency on Vulnerable Third-Party Component vulnerability in Johnson Controls FX Server, Johnson Controls FX80, and Johnson Controls FX90 allows CAPEC‑17: Accessing, Modifying or Deleting Files.

This issue affects FX Server: before 14.10.10 and before 14.14.1; FX80: before 14.14.10 and before 14.14.1; FX90: before 14.10.10 and before 14.14.1.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_