Description
A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation
Published: 2025-07-30
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-23150 A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation
History

Wed, 30 Jul 2025 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Silabs
Silabs emberznet
Vendors & Products Silabs
Silabs emberznet

Wed, 30 Jul 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 30 Jul 2025 08:15:00 +0000

Type Values Removed Values Added
Description A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation
Title DoS in Zigbee device due to heavy traffic
Weaknesses CWE-667
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Silabs Emberznet
cve-icon MITRE

Status: PUBLISHED

Assigner: Silabs

Published:

Updated: 2025-07-30T13:40:39.039Z

Reserved: 2025-02-11T05:43:30.180Z

Link: CVE-2025-1221

cve-icon Vulnrichment

Updated: 2025-07-30T13:40:33.353Z

cve-icon NVD

Status : Deferred

Published: 2025-07-30T08:15:33.133

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-1221

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-30T15:04:13Z

Weaknesses