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

Quick assessment

Affected
Johnson Controls iSTAR Configuration Utility (ICU)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Johnson Controls iSTAR Configuration Utility是美国江森自控（Johnson Controls）公司的一款用于配置和管理iSTAR Controllers的软件工具。 Johnson Controls iSTAR Configuration Utility (ICU) 6.9.7及之前版本存在安全漏洞，该漏洞源于栈缓冲区溢出，可能导致操作系统故障。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-26386

Vulnerability Information
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Vulnerability Title
Stack-based Buffer Overflow in Johnson Controls iSTAR Configuration Utility (ICU) tool
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Johnson Controls iSTAR Configuration Utility 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Johnson Controls iSTAR Configuration Utility是美国江森自控（Johnson Controls）公司的一款用于配置和管理iSTAR Controllers的软件工具。 Johnson Controls iSTAR Configuration Utility (ICU) 6.9.7及之前版本存在安全漏洞，该漏洞源于栈缓冲区溢出，可能导致操作系统故障。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Johnson Controls iSTAR Configuration Utility (ICU) iSTAR Configuration Utility (ICU) tool version 6.9.7 and prior -

II. Public POCs for CVE-2025-26386

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III. Intelligence Information for CVE-2025-26386

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Vendor Pages for CVE-2025-26386 (1)

IV. Related Vulnerabilities

Same product: iSTAR Configuration Utility (ICU)
Same vendor: Johnson Controls
Same weakness: CWE-121

V. Comments for CVE-2025-26386

Anonymous User
2026-06-20 11:26:53

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