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CVE-2026-21661— AC2000 Uncontrolled Search Path Element

Quick assessment

Affected
Johnson Controls AC2000
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 AC2000是美国江森自控（Johnson Controls）公司的一个企业级门禁与安防管理系统。 Johnson Controls AC2000存在代码问题漏洞，该漏洞源于不受控制的搜索路径元素，可能导致配置文件搜索路径被利用。以下版本受到影响：10.6版本至10之前版本、11.0版本至9之前版本和12版本至3之前版本。

CVSS 8.4 · High EPSS 0.11% · P1

Possible ATT&CK Techniques 2 AI

T1112 · Modify Registry T1574.001 · DLL

Affected Version Matrix 3

VendorProduct Version RangeStatus
Johnson Controls AC2000 10.6< release 10 affected
11.0< release 9 affected
12< release 3 affected
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I. Basic Information for CVE-2026-21661

Vulnerability Information
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Vulnerability Title
AC2000 Uncontrolled Search Path Element
Source: CVE Program / CVE List V5
Vulnerability Description
An Uncontrolled Search Path Element vulnerability in JohnsonControls AC2000 on Windows allows Leveraging/Manipulating Configuration File Search Paths. This issue affects AC2000: from 10.6 before release 10, from 11.0 before release 9, from 12 before release 3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对搜索路径元素未加控制
Source: CVE Program / CVE List V5
Vulnerability Title
Johnson Controls AC2000 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Johnson Controls AC2000是美国江森自控（Johnson Controls）公司的一个企业级门禁与安防管理系统。 Johnson Controls AC2000存在代码问题漏洞，该漏洞源于不受控制的搜索路径元素，可能导致配置文件搜索路径被利用。以下版本受到影响：10.6版本至10之前版本、11.0版本至9之前版本和12版本至3之前版本。
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 AC2000 10.6 ~ release 10 -

II. Public POCs for CVE-2026-21661

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III. Intelligence Information for CVE-2026-21661

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Vendor Pages for CVE-2026-21661 (1)

IV. Related Vulnerabilities

Same vendor: Johnson Controls
Same weakness: CWE-427

V. Comments for CVE-2026-21661

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