// For flags

CVE-2021-27662

KT-1 Capture-replay

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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

El controlador de puertas KT-1 es susceptible de sufrir ataques de repetición o de tipo man-in-the-middle en los que un atacante puede grabar y reproducir paquetes TCP. Este problema afecta a Johnson Controls KT-1 en Todas las versiones hasta 3.01 incluyéndola

*Credits: Dr. Dave Burke, Anthony Connor, Harrison Spisak
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-02-24 CVE Reserved
  • 2021-09-15 CVE Published
  • 2024-09-17 CVE Updated
  • 2024-12-17 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-294: Authentication Bypass by Capture-replay
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Johnsoncontrols
Search vendor "Johnsoncontrols"
 Kantech Kt-1 Door Controller Firmware
Search vendor "Johnsoncontrols" for product "Kantech Kt-1 Door Controller Firmware"
 <= 3.01
Search vendor "Johnsoncontrols" for product "Kantech Kt-1 Door Controller Firmware" and version " <= 3.01"
-
Affected
in Johnsoncontrols
Search vendor "Johnsoncontrols"
 Kantech Kt-1 Door Controller
Search vendor "Johnsoncontrols" for product "Kantech Kt-1 Door Controller"
--
Safe