CVE-2025-26386
Unknown Unknown - Not Provided
Stack-Based Buffer Overflow in Johnson Controls iSTAR ICU Causes System Crash

Publication date: 2026-01-28

Last updated on: 2026-01-28

Assigner: Johnson Controls

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.
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Meta Information
Published
2026-01-28
Last Modified
2026-01-28
Generated
2026-06-16
AI Q&A
2026-01-29
EPSS Evaluated
2026-06-15
NVD
CVE-2025-26386
EUVD
EUVD-2025-206488
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
johnson_controls istar_configuration_utility to 6.9.7 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
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Executive Summary

This vulnerability is a stack-based buffer overflow in the Johnson Controls iSTAR Configuration Utility (ICU) version 6.9.7 and earlier. A buffer overflow occurs when more data is written to a buffer than it can hold, which can cause the program to crash or behave unexpectedly. In this case, successful exploitation could cause the operating system of the machine running the ICU tool to fail.

Impact Analysis

Exploitation of this vulnerability could lead to failure of the operating system on the machine hosting the ICU tool. This could result in denial of service or system instability, potentially disrupting operations that depend on the ICU software.

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