CVE-2025-43873

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

Published Dec 17, 2025 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
Successful exploitation of these vulnerabilities could allow an attacker to modify firmware and gain full access to the device.

Remediation

Vendor Solution

* Upgrade iSTAR Ultra, iSTAR Ultra SE, iStar Ultra LT to version 6.9.7.CU01 or greater. * Upgrade iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2 to version 6.9.3 or greater.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Johnsoncontrols
Johnsoncontrols edge G2
Johnsoncontrols istar Edge G2
Johnsoncontrols istar Ultra
Johnsoncontrols istar Ultra G2
Johnsoncontrols istar Ultra G2 Se
Johnsoncontrols istar Ultra Se
Vendors & Products Johnsoncontrols
Johnsoncontrols edge G2
Johnsoncontrols istar Edge G2
Johnsoncontrols istar Ultra
Johnsoncontrols istar Ultra G2
Johnsoncontrols istar Ultra G2 Se
Johnsoncontrols istar Ultra Se
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Successful exploitation of these vulnerabilities could allow an attacker to modify firmware and gain full access to the device.
Title iSTAR Ultra, Ultra SE, Ultra G2, Ultra G2 SE, iSTAR Edge G2 - Authenticated web application command injection - setFaultDebounce
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
jci
Published
Updated
Aug 24, 2026, 8:33 PM
Reserved
Apr 17, 2025, 8:07 PM
Status
Deferred
Published
Dec 17, 2025, 4:16 PM
Modified
Jun 17, 2026, 9:24 AM