Nonce Reuse Vulnerability in Johnson Controls Products
CVE-2025-61739

7.2HIGH

Key Information:

Vendor

Johnson Controls

Status
Iq Panels2, 2+, Iqhub, Iqpanel 4, Powerg
Vendor
CVE Published:
22 December 2025

What is CVE-2025-61739?

A security flaw arises from the reuse of nonces in Johnson Controls Security Systems, which could allow attackers to execute reply attacks or decrypt previously captured packets. This vulnerability poses a significant risk to data integrity and confidentiality, potentially exposing sensitive information to unauthorized entities. Addressing this issue is crucial for maintaining robust cybersecurity defenses.

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Deploy the Patch

Affected Version(s)

IQ Panels2, 2+, IQHub, IQPanel 4, PowerG IQPanel2 <= 2

IQ Panels2, 2+, IQHub, IQPanel 4, PowerG IQ Panels 2+ <= 2+

IQ Panels2, 2+, IQHub, IQPanel 4, PowerG IQHub

References

https://www.johnsoncontrols.com/trust-center/cybersecurit...
https://www.cisa.gov/news-events/ics-advisories/icsa-25-3...

CVSS V4

Score:
7.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

James Chambers of NCC Group
Sultan Qasim Khan of NCC Group
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