CVE-2025-53696
Critical
Description
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.
SeverityCritical
CVSS9.3
Exploit probability—
ProductiSTAR Ultra
PublishedJul 28, 2025
First seenJul 28, 2025
Weakness typeCWE-494CWE-494
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Johnson Controls, Inc iSTAR Ultra | v ≤ 6.9.2 | — |
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