---
id: "CVE-2025-53698"
page: "https://infrastack.ai/live/CVE-2025-53698"
kind: "vulnerability"
aliases: ["CVE-2025-53698"]
title: "Johnson Controls iSTAR Ultra: alternate hardware interface lets attackers bypass access controls"
severity: "high"
cvss: 7.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["access-control", "infrastructure", "istar-ultra", "johnson-controls", "physical-security"]
not_affected_if: ["patched-version"]
published_at: "2026-11-13T22:17:18+00:00"
first_seen_at: "2026-11-13T22:33:33+00:00"
updated_at: "2026-11-13T22:34:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-53698", "first_seen_at": "2026-11-13T22:33:33+00:00"}]
exploit_sources: []
---

# Johnson Controls iSTAR Ultra: alternate hardware interface lets attackers bypass access controls

Link for people: https://infrastack.ai/live/CVE-2025-53698 (this .md is for agents)

Johnson Controls iSTAR Ultra and iSTAR Ultra SE lack a protection mechanism on an alternate hardware interface, which lets an attacker bypass intended functionality. The sources describe it as a functionality bypass (CAPEC-554) and do not detail what an attacker can reach.

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

## How to check

- Check the installed iSTAR Ultra or iSTAR Ultra SE version in the product's software about or status screen, as the sources do not give a command.

## Fix

- iSTAR Ultra: upgrade to `6.9.2.CU02` or later
- iSTAR Ultra SE: upgrade to `6.9.2.CU02` or later

## Timeline

- 2026-11-13T22:33:33+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2025-53698

## From the sources

Missing protection mechanism for alternate hardware interface vulnerability in Johnson Controls iSTAR Ultra and Johnson Controls iSTAR Ultra SE allows CAPEC‑554: Functionality Bypass.

This issue affects iSTAR Ultra: before 6.9.2.CU02; iSTAR Ultra SE: before 6.9.2.CU02.

---

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