What’s Vulnerable › Vulnerabilities

CVE-2025-43873: iSTAR Ultra, Ultra SE, Ultra G2, Ultra G2 SE, iSTAR Edge G2 - Authenticated web application command injection - setFaultDebounce

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-17 · updated 2026-06-17
• Weakness: CWE-78

Description

Successful exploitation of these vulnerabilities could allow an attacker to modify firmware and gain full access to the device.

Affected products

• Johnson Control iSTAR Ultra, iSTAR Ultra SE, iSTAR Ultra G2, iSTAR Ultra G2 SE, iSTAR Edge G2: through 6.9.3

References

• https://www.cisa.gov/news-events/ics-advisories/icsa-25-345-02
• https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

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