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CVE-2025-53696

Quick assessment

Affected
Johnson Controls, Inc iSTAR Ultra
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 Ultra是美国江森自控（Johnson Controls）公司的一款门禁控制器。提供网络弹性和更快的处理速度。 Johnson Controls iSTAR Ultra 6.9.2及之前版本存在安全漏洞，该漏洞源于固件验证不完整，可能导致执行恶意代码。

AI Predicted 9.8 Difficulty: Hard EPSS 0.10% · P1
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I. Basic Information for CVE-2025-53696

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
iSTAR Ultra performs a firmware verification on boot, however the verification does not inspect certain portions of the firmware. These firmware parts may contain malicious code. Tested up to firmware 6.9.2, later firmwares are also possibly affected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
下载代码缺少完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
Johnson Controls iSTAR Ultra 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Johnson Controls iSTAR Ultra是美国江森自控（Johnson Controls）公司的一款门禁控制器。提供网络弹性和更快的处理速度。 Johnson Controls iSTAR Ultra 6.9.2及之前版本存在安全漏洞，该漏洞源于固件验证不完整，可能导致执行恶意代码。
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, Inc iSTAR Ultra 0 ~ 6.9.2 -

II. Public POCs for CVE-2025-53696

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III. Intelligence Information for CVE-2025-53696

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News Coverage for CVE-2025-53696 (1)

IV. Related Vulnerabilities

Same product: iSTAR Ultra
Same vendor: Johnson Controls, Inc
Same weakness: CWE-494