CVE-2026-21661

HIGH EPSS 1.4%

Published May 6, 20261mo ago · Modified Jun 17, 20261w ago

8.4 CVSS 4.0

High

Published May 6, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

8.4

Exploitability

—

Impact

—

Vector string

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Local

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

1.4% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-427

References 1

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

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.