CVE-2025-43873 Command injection in iSTAR Ultra, iSTAR Ultra SE, iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2
Authenticated attackers can inject commands via setFaultDebounce to modify firmware and gain full device access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-43873?
CVE-2025-43873 is a high-severity command injection vulnerability in Johnson Control iSTAR Ultra, iSTAR Ultra SE, iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2, published on 17 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Successful exploitation of these vulnerabilities could allow an attacker to modify firmware and gain full access to the device.
Weakness: CWE-78
Which versions are affected by CVE-2025-43873?
How do I fix CVE-2025-43873?
No fix has been published for CVE-2025-43873 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-43873 being exploited?
There is no known exploitation of CVE-2025-43873 in the wild and no public exploit code.
Sources
Also known as GHSA-h6qm-9g23-f84m.