CVE-2026-21661

AC2000 Uncontrolled Search Path Element

State: Published
Severity: 8.4 High
Published: May 6, 2026
Updated: Aug 24, 2026
Reserved: Jan 2, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.4 High	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	jci

Weaknesses

CWE-427 Uncontrolled Search Path Element

Affected Products

Product	Versions
AC2000Johnson Controls	10.6 to before release 10Affected 11.0 to before release 9Affected 12 to before release 3Affected

References

https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories

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