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PowerG CVE-2025-61738

LOW
Cleartext Transmission of Sensitive Information (CWE-319)
2025-12-22 productsecurity@jci.com
2.3
CVSS 4.0 · Vendor: jci
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain RF proximity to PowerG network
  2. Exploit
    Passively capture key material over the air
  3. Execution
    Recover network encryption key
  4. Impact
    Read or forge encrypted PowerG packets

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V12 - Secure Communication Transport encryption
Exploitation Conditions

Exploitation requires the attacker to be within radio range of the target's PowerG wireless security network and to observe traffic during the specific window in which the network key can be captured ('under certain circumstances' per the description - the exact trigger, likely device pairing/enrollment or a particular session state, is not detailed in the available data). Limiting factors are significant: the CVSS vector sets AC:H (the circumstances are not generally present), UI:P (a passive user/operator action is needed), and the attack is bounded to the PowerG RF medium rather than arbitrary internet reachability. Authentication is unauthenticated (PR:N in the provided vector), but RF proximity and the conditional trigger substantially constrain realistic exploitation.

Impact

This is a genuinely low-priority issue by every available signal, not a high-CVSS flaw that merely sounds scary. The vendor-assigned CVSS 4.0 base score is only 2.3 (Low), driven by AC:H (high attack complexity - exploitation works only 'under certain circumstances'), UI:P (passive user interaction required), and VC:L with no integrity or availability impact in the official vector. EPSS agrees: 0.18% probability at the 7th percentile indicates near-negligible expectation of exploitation. The CVE is NOT on CISA KEV and no public exploit code is referenced, so exploitation status is 'no public exploit identified at time of analysis.' One cross-source tension worth flagging: the official vector is scored AV:N, but PowerG is an RF/wireless security-panel protocol and the described attack (capturing the network key off the medium) is realistically a radio-proximity attack closer to AV:A - the network labeling likely overstates remote reachability, so real-world risk is lower than AV:N implies. A second tension: the CWE-319 classification and the phrase 'read or write encrypted packets' imply a potential integrity impact (packet injection/spoofing), yet the vendor vector sets VI:N - so the official score may slightly understate impact even as its attack-vector choice overstates reach.

Exploit ScenarioDerived

An attacker within radio range of a PowerG wireless security network passively observes traffic and, under specific timing/configuration circumstances, recovers the network key. With the key the attacker can decrypt sensor/panel traffic and potentially inject or forge 'encrypted' packets to read protected data or tamper with communications. No public proof-of-concept exists, and the high attack complexity plus required proximity/interaction make opportunistic exploitation unlikely.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
No patch listed yet 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 19, 2026

Network key exposure in Johnson Controls PowerG wireless security networks can allow an attacker within radio range to capture the network key under narrow conditions and then read or modify encrypted PowerG packets. This is a low-severity issue (CVSS 2.3; assessed CVSS 3.1 AV:A/AC:H/PR:N/UI:R/C:L/I:L/A:N), with EPSS 0.18% and no public exploit identified at time of analysis. Exploitation requires RF proximity and a specific capture window, so realistic risk is limited despite the unauthenticated vector.

RemediationAI

No vendor-released patch version is identified in the available data; consult the CISA ICSA-25-350-02 advisory and the Johnson Controls trust-center advisory for the exact fixed firmware or device update and apply it to all PowerG control panels and wireless devices. If an update is not yet available, rotate the PowerG network key if key exposure is suspected, perform device enrollment or pairing only in a controlled RF environment away from potential observers, and monitor the RF environment for rogue devices or unexpected repeaters. Trade-offs: network-key rotation will disrupt communications until devices are re-enrolled, RF monitoring requires specialized tooling and staff, and restricting enrollment/pairing windows may complicate installation and maintenance.

Affected ProductsAI

Johnson Controls PowerG wireless security network components, including PowerG-enabled control panels, sensors, and related wireless devices, are affected according to the available data. No CPE strings or explicit model/firmware version range were supplied in the input, so the authoritative affected-product and version list should be taken from the CISA ICSA-25-350-02 advisory at https://www.cisa.gov/news-events/ics-advisories/icsa-25-350-02 and the Johnson Controls security advisory at https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories.

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Technical ContextAI · show details

PowerG is a wireless protocol used in Johnson Controls security and life-safety systems for communication among control panels, sensors, and related devices. CWE-319 identifies the root-cause class as cleartext transmission of sensitive information, meaning sensitive protocol material can be exposed in transit rather than being adequately protected. In this case, the exposed material is the PowerG network key, which can be captured under specific circumstances and then used to read or write encrypted packets on the PowerG network. The provided CVSS 4.0 vector is AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N, while the independent assessment uses CVSS 3.1 AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N; both point to high attack complexity, user/operator involvement, RF-adjacent conditions, and low confidentiality/integrity impact with no availability impact.

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Severity by source

Vendor (jci) PRIMARY 2.3 LOW
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
vuln.today AI 3.7 LOW

PowerG key capture is an RF-proximity attack (AV:A) that works only under specific conditions (AC:H); no auth needed (PR:N) but passive interaction (UI:R), and 'read or write' packets gives C:L and I:L.

3.1 AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
4.0 AV:A/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (jci).

CVSS VectorVendor: jci

Attack Vector
Network
Attack Complexity
High
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Vulnerable system: Confidentiality
Low
Vulnerable system: Integrity
None
Vulnerable system: Availability
None
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

DescriptionCVE.org

Under certain circumstances, attacker can capture the network key, read or write encrypted packets on the PowerG network.

Threat Intelligence Overview

EPSS Score
0.2%
Top 93% exploitable
Prevalence
Medium
PowerG is a widely deployed DSC/Johnson Controls wireless alarm protocol, but industry-specific
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC No
EPSS 0.2%
Patch available No
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Low

Priority Score

12
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +12
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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