CVE-2026-71456 Johnson Controls Kantech Entrapass - Broken Cryptography

Johnson Controls Kantech Entrapass < 9.20 contains a hardcoded cryptographic key vulnerability caused by use of fixed cryptographic keys, letting attackers perform padding oracle crypto attacks, exploit requires network access.

CVSS base score 8.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Broken Cryptography
Impact
Information Disclosure, Data Tampering
CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
26 October 2026
Updated
27 October 2026
Weakness
CWE-321

Vendor fix

Update to version 9.20 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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