CVE-2025-43876

High

Description

Under certain circumstances a successful exploitation could result in access to the device.

SeverityHigh
CVSS8.7
Exploit probability—
ProductiSTAR Ultra, iSTAR Ultra SE
PublishedDec 24, 2025
First seenDec 24, 2025

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
Johnson Controls iSTAR Ultra, iSTAR Ultra SEv ≤ 6.9.7—
Johnson Controls iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2v ≤ 6.9.2—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.