High 7.1Published Jan 28, 2026

CVE-2025-26386Stack-based Buffer Overflow in Johnson Controls iSTAR Configuration Utility (ICU) tool

Updated under an hour ago (Oct 27, 2026, 7:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for Johnson Controls iSTAR Configuration Utility (ICU)

Exploited in the last 30 days

Johnson Controls iSTAR Configuration Utility (ICU) has Stack-based Buffer Overflow vulnerability. This issue affects iSTAR Configuration Utility (ICU) version 6.9.7 and prior. Successful exploitation of this vulnerability could result in failure within the operating system of the machine hosting the ICU tool.

CVSS: 7.1 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-121
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: jci
NVD analysis: Deferred
Record last updated: Jan 28, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Johnson Controls iSTAR Configuration Utility (ICU) johnson_controls:istar_configuration_utility_icu (from the name)	iSTAR Configuration Utility (ICU) tool version 6.9.7 and prior	CNA record

References

References

https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-04

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.