CVE-2025-26386 - CVE House
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Status published High CVE-2025-26386

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

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Bughunter Tenable

References

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Affected Vendor

Johnson Controls

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Affected Software

iSTAR Configuration Utility (ICU)
Vulnerable Versions:
iSTAR Configuration Utility (ICU) tool version 6.9.7 and prior

Timeline

Official Publish: January 28th, 2026
Last Modified: January 28th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-121

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1485 Data Destruction
Impact