CVE-2026-21661

HIGH

AC2000 Uncontrolled Search Path Element

Title source: cna
STIX 2.1

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.

Scores

CVSS v4 8.4
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

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-427
Status published
Products (3)
JohnsonControls/AC2000 10.6 - release 10
JohnsonControls/AC2000 11.0 - release 9
JohnsonControls/AC2000 12 - release 3
Published May 06, 2026
Tracked Since May 06, 2026