# CVE-2025-43873

## Summary

- **CVE ID:** CVE-2025-43873
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-78
- **Published:** Dec 17, 2025
- **Last Modified:** Aug 24, 2026

## 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 (0)

## References

- [CNA](https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories)
- [CNA](https://www.cisa.gov/news-events/ics-advisories/icsa-25-345-02)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.6

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._