CVE-2025-61739

Packet decryption and replay via reused nonces

Published Dec 22, 2025 · Updated Dec 22, 2025

Nonce reuse in Johnson Controls Qolsys IQ Panel and PowerG devices allows physically proximate attackers to decrypt packets or replay messages. PowerG radio encryption reuses a nonce with the same key, exposing captured ciphertext and permitting previously valid encrypted packets to be transmitted again. Exploitation requires wireless proximity but no authentication or user interaction, and it can disclose protected traffic or cause acceptance of a replayed message.

CVSS severity7.2
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Nonce reuse in Johnson Controls Qolsys IQ Panel and PowerG devices allows physically proximate attackers to decrypt packets or replay messages. PowerG radio encryption reuses a nonce with the same key, exposing captured ciphertext and permitting previously valid encrypted packets to be transmitted again. Exploitation requires wireless proximity but no authentication or user interaction, and it can disclose protected traffic or cause acceptance of a replayed message.

The record

CVE
CVE-2025-61739
Published
Dec 22, 2025
Updated
Dec 22, 2025
Vendor
Johnson Controls
Product
Qolsys IQ Panel
Classifications
CWE-323, CAPEC-216, T0842
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=IQHub
  2. Affected versionversion=IQPanel2 <=2
  3. Affected versionversion=IQPanel 4 <=4.6.0
  4. Affected versionversion=IQ Panels 2+ <=2+

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Johnson Controls · Qolsys IQ Panelversion=IQHub; version=IQPanel2 <=2; version=IQPanel 4 <=4.6.0; version=IQ Panels 2+ <=2+

Published CVSS scores

7.2Johnson ControlsCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:N
7.6CISACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-323Reusing a Nonce, Key Pair in Encryption
CAPEC-216Communication Channel Manipulation
T0842Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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