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.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
JohnsonControls AC2000 unaffected
Version Status Constraints
10.6 affected < release 10
11.0 affected < release 9
12 affected < release 3

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Project Subscriptions

Vendors Products
Johnsoncontrols Subscribe
Ac2000 Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories cve-icon cve-icon
History

Wed, 06 May 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 06 May 2026 16:45:00 +0000

Type Values Removed Values Added
Description 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.
Title AC2000 Uncontrolled Search Path Element
First Time appeared Johnsoncontrols
Johnsoncontrols ac2000
Weaknesses CWE-427
CPEs cpe:2.3:a:johnsoncontrols:ac2000:*:*:windows:*:*:*:*:*
Vendors & Products Johnsoncontrols
Johnsoncontrols ac2000
References
Metrics cvssV4_0

{'score': 8.4, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jci

Published:

Updated: 2026-05-06T19:02:28.291Z

Reserved: 2026-01-02T13:23:28.170Z

Link: CVE-2026-21661

cve-icon Vulnrichment

Updated: 2026-05-06T19:02:23.363Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-06T17:16:21.890

Modified: 2026-05-06T19:05:56.337

Link: CVE-2026-21661

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-06T18:00:12Z

Weaknesses