8.6
HIGH
CVE-2021-27662
"Johnson Controls KT-1 TCP Replay Attack"
Description

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

INFO

Published Date :

Sept. 15, 2021, 1:15 p.m.

Last Modified :

Sept. 28, 2021, 12:58 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.7

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-27662 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Johnsoncontrols kantech_kt-1_door_controller_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-27662.

URL Resource
https://us-cert.gov/ics/advisories Third Party Advisory US Government Resource
https://www.johnsoncontrols.com/cyber-solutions/security-advisories Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-27662 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-27662 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Sep. 28, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://us-cert.gov/ics/advisories No Types Assigned https://us-cert.gov/ics/advisories Third Party Advisory, US Government Resource
    Changed Reference Type https://www.johnsoncontrols.com/cyber-solutions/security-advisories No Types Assigned https://www.johnsoncontrols.com/cyber-solutions/security-advisories Vendor Advisory
    Added CWE NIST CWE-294
    Added CPE Configuration AND OR *cpe:2.3:o:johnsoncontrols:kantech_kt-1_door_controller_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.01 OR cpe:2.3:h:johnsoncontrols:kantech_kt-1_door_controller:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.16 }} -0.00%

score

0.52342

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability