VULNERABILITY INTELLIGENCE

CVE-2021-27661

CVSS score8.8 HIGH

EPSS probability0.82%

CISA KEVNot currently listed

Published2021-07-01

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

Successful exploitation of this vulnerability could give an authenticated Facility Explorer SNC Series Supervisory Controller (F4-SNC) user an unintended level of access to the controller’s file system, allowing them to access or modify system files by sending specifically crafted web messages to the F4-SNC.

Weakness classification

CWE-269: Improper Privilege Management
CWE-863: Incorrect Authorization

Primary references

productsecurity@jci.com — Third Party Advisory, US Government Resource
productsecurity@jci.com — Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, US Government Resource
af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory