CVE-2025-53696: critical vulnerability in Johnson Controls, Inc iSTAR Ultra
Published · Updated
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.1%
iSTAR Ultra performs a firmware verification on boot, however the verification does not inspect certain portions of the firmware. These firmware parts may contain malicious code. Tested up to firmware 6.9.2, later firmwares are also possibly affected.
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
Johnson Controls, Inc · iSTAR UltraRelated CVEs — Johnson Controls, Inc iSTAR Ultra
In the same product, most dangerous first.