---
id: CVE-2026-71456
title: >-
  Use of hard-coded cryptographic key vulnerability in Johnson Controls Kantech
  Entrapass allows Padding Oracle Crypto Attack.


  This issue affects Kantech Entrapass: before 9.20.
summary: >-
  Use of hard-coded cryptographic key vulnerability in Johnson Controls Kantech
  Entrapass allows Padding Oracle Crypto Attack.


  This issue affects Kantech Entrapass: before 9.20.
severity: high
cvss: 8.5
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-321
vendor: Johnson Controls
product: Kantech Entrapass
affected:
  - kantech_entrapass < 9.20
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T16:20:31.605Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-71456'
references:
  - url: >-
      https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories
tags:
  - cve.org
ingestedAt: '2026-10-26T16:31:40.052Z'
---

## Overview

Use of hard-coded cryptographic key vulnerability in Johnson Controls Kantech Entrapass allows Padding Oracle Crypto Attack.

This issue affects Kantech Entrapass: before 9.20.

## Affected

- `kantech_entrapass < 9.20`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.