CVE-2024-7322: CWE-940 Improper Verification of Source of a Communication Channel in silabs.com EmberZNet
A ZigBee coordinator, router, or end device may change their node ID when an unsolicited encrypted rejoin response is received, this change in node ID causes Denial of Service (DoS). To recover from this DoS, the network must be re-established
AI Analysis
Technical Summary
This vulnerability (CVE-2024-7322) in EmberZNet involves improper verification of the source of a communication channel (CWE-940). Specifically, ZigBee devices may accept unsolicited encrypted rejoin responses and change their node ID as a result, leading to a denial of service condition. The affected versions include 0 through 7.4.0. The CVSS v3.1 base score is 5.8, reflecting a network attack vector with high attack complexity and required privileges, no user interaction, and an impact limited to availability (DoS). No official patch or remediation level has been provided by silabs.com as of the published date.
Potential Impact
The impact of this vulnerability is a denial of service on affected ZigBee devices, which can disrupt network operations by forcing a network re-establishment. There is no impact on confidentiality or integrity reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, affected users should monitor vendor communications for updates. No official mitigation or temporary fix has been provided by silabs.com at this time.
CVE-2024-7322: CWE-940 Improper Verification of Source of a Communication Channel in silabs.com EmberZNet
Description
A ZigBee coordinator, router, or end device may change their node ID when an unsolicited encrypted rejoin response is received, this change in node ID causes Denial of Service (DoS). To recover from this DoS, the network must be re-established
CVSS v3.1
Score 5.8medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2024-7322) in EmberZNet involves improper verification of the source of a communication channel (CWE-940). Specifically, ZigBee devices may accept unsolicited encrypted rejoin responses and change their node ID as a result, leading to a denial of service condition. The affected versions include 0 through 7.4.0. The CVSS v3.1 base score is 5.8, reflecting a network attack vector with high attack complexity and required privileges, no user interaction, and an impact limited to availability (DoS). No official patch or remediation level has been provided by silabs.com as of the published date.
Potential Impact
The impact of this vulnerability is a denial of service on affected ZigBee devices, which can disrupt network operations by forcing a network re-establishment. There is no impact on confidentiality or integrity reported. No known exploits are currently observed in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, affected users should monitor vendor communications for updates. No official mitigation or temporary fix has been provided by silabs.com at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Silabs
- Date Reserved
- 2024-07-31T09:01:54.841Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69e64a4819fe3cd2cd0b9553
Added to database: 4/20/2026, 3:46:16 PM
Last enriched: 4/20/2026, 4:01:34 PM
Last updated: 6/4/2026, 6:07:34 PM
Views: 84
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