CVE-2025-26386

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

Published Jan 28, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

Update the ICU to version 6.9.8

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Johnsoncontrols
Johnsoncontrols istar Configuration Utility
Vendors & Products Johnsoncontrols
Johnsoncontrols istar Configuration Utility
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Stack-based Buffer Overflow vulnerability in Johnson Controls iSTAR Configuration Utility (ICU) allows Overflow Buffers.This issue affects iSTAR Configuration Utility (ICU): iSTAR Configuration Utility (ICU) tool version 6.9.7 and prior. 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.
Title Johnson Controls iSTAR Configuration Utility (ICU) tool has Stack-based Buffer Overflow Stack-based Buffer Overflow in Johnson Controls iSTAR Configuration Utility (ICU) tool
Type Values Removed Values Added
Description Stack-based Buffer Overflow vulnerability in Johnson Controls iSTAR Configuration Utility (ICU) allows Overflow Buffers.This issue affects iSTAR Configuration Utility (ICU): iSTAR Configuration Utility (ICU) tool version 6.9.7 and prior.
Title Johnson Controls iSTAR Configuration Utility (ICU) tool has Stack-based Buffer Overflow
Weaknesses CWE-121
References
Metrics cvssV4_0

{'score': 7.1, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
jci
Published
Updated
Jan 28, 2026, 3:49 PM
Reserved
Feb 7, 2025, 2:15 PM
Status
Deferred
Published
Jan 28, 2026, 12:15 PM
Modified
Jun 17, 2026, 9:01 AM