Vulnerability in Johnson Controls Kt-1
CVE-2021-27662
The KT-1 door controller is susceptible to replay or man-in-the-middle attacks where an attacker can record and replay TCP packets. This issue affects Johnson Controls KT-1 all versions up to and including 3.01
EPSS: 0.008 (54.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L.
Affected products
- Johnson Controls Kt-1 — versions all versions up to and including 3.01
- Johnsoncontrols Kantech_kt-1_door_controller
- Johnsoncontrols Kantech_kt-1_door_controller_firmware
Weakness classification (CWE)
References
- productsecurity@jci.com (x_refsource_CONFIRM, Vendor Advisory)
- productsecurity@jci.com (US Government Resource, Third Party Advisory, x_refsource_CERT, third-party-advisory)
Frequently asked questions
- What is CVE-2021-27662?
- CVE-2021-27662 is a high-severity vulnerability in Johnson Controls Kt-1, classified under Authentication Bypass by Capture-replay. CVSS score: 8.6/10. Published 2021-09-15.
- How severe is CVE-2021-27662?
- High severity. CVSS v3 base score is 8.6 out of 10.