7.0
HIGH CVSS 4.0
CVE-2025-53698
Johnson Controls iSTAR Ultra Hardware Interface Bypass Vulnerability
Description

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.

INFO

Published Date :

Nov. 13, 2026, 10:17 p.m.

Last Modified :

Nov. 13, 2026, 10:17 p.m.

Remotely Exploit :

No
Affected Products

The following products are affected by CVE-2025-53698 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Johnson_controls istar_ultra
2 Johnson_controls istar_ultra_se
1 Johnsoncontrols istar_ultra
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 4.0 HIGH 7281d04a-a537-43df-bfb4-fa4110af9d01
CVSS 4.0 HIGH [email protected]
Solution
Update firmware to patch protection mechanism vulnerability for iSTAR Ultra and iSTAR Ultra SE devices.
  • Update iSTAR Ultra firmware to 6.9.2.CU02 or later.
  • Update iSTAR Ultra SE firmware to 6.9.2.CU02 or later.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-53698.

URL Resource
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-53698 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-53698 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-53698 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-53698 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Nov. 13, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added CVSS V4.0 AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CWE CWE-1299
    Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2025/53xxx/CVE-2025-53698.json">CVE-2025-53698</a>
    Added Reference https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.