# CVE-2025-53699: CVE-2025-53699

Status: published. Published: 2026-11-13. Updated: 2026-11-13.

Missing protection mechanism for alternate hardware interface vulnerability in Johnson Controls iSTAR Ultra, Johnson Controls iSTAR Ultra SE, Johnson Controls iSTAR Ultra G2, Johnson Controls iSTAR Ultra G2 SE, and Johnson Controls iSTAR Edge G2 allows CAPEC‑554: Functionality Bypass.

This issue affects iSTAR Ultra: before 6.9.2.CU02; iSTAR Ultra SE: before 6.9.2.CU02; iSTAR Ultra G2: before 6.9.2.CU02; iSTAR Ultra G2 SE: before 6.9.2.CU02; iSTAR Edge G2: before 6.9.2.CU02.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Johnson Controls / iSTAR Ultra: ≥ 0; < 6.9.2.CU02 (affected, custom). Source: CNA: jci
- Johnson Controls / iSTAR Ultra SE: ≥ 0; < 6.9.2.CU02 (affected, custom). Source: CNA: jci
- Johnson Controls / iSTAR Ultra G2: ≥ 0; < 6.9.2.CU02 (affected, custom). Source: CNA: jci
- Johnson Controls / iSTAR Ultra G2 SE: ≥ 0; < 6.9.2.CU02 (affected, custom). Source: CNA: jci
- Johnson Controls / iSTAR Edge G2: ≥ 0; < 6.9.2.CU02 (affected, custom). Source: CNA: jci

## Severity and prioritization

- CVSS 4.0: 7 (high); CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: jci

- CVSS 4.0: 7 (high); CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: productsecurity@jci.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-1299

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories (CNA: jci)

- https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories (productsecurity@jci.com)

## Provenance

- CNA: jci: https://www.cve.org/CVERecord?id=CVE-2025-53699; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-53699; retrieved 2026-11-14; source updated 2026-11-13

Revision: 8fdead3d6f9b30b6f8f7860f3ce9db48b4a1e850498dfabc12d4dce8d8ea3597

Canonical: https://y2.dev/cve/CVE-2025-53699

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