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CVE-2025-43873

iSTAR Ultra, Ultra SE, Ultra G2, Ultra G2 SE, iSTAR Edge G2 - Authenticated web application command injection - setFaultDebounce

HIGH
8.7
CVSS Score
Published: December 17, 2025 at 03:53 PM UTC
Updated: June 17, 2026 at 09:24 AM UTC
5 products affected across 1 vendoriSTAR Ultra SEiSTAR UltraiSTAR Ultra G2

Using iSTAR Ultra, iSTAR Ultra SE, iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2 by Johnson Control?

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Severity
HIGH8.7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Successful exploitation of these vulnerabilities could allow an attacker to modify firmware and gain full access to the device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Source: cverecord
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
Source: cverecord
https://www.cisa.gov/news-events/ics-advisories/icsa-25-345-02

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHjci
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-78

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