CVE-2025-26386
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| johnson_controls | istar_configuration_utility | to 6.9.7 (exc) |
Helpful Resources
Exploitability
| 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). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.