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Status published
Medium
CVE-2025-1221
DoS in Zigbee device due to heavy traffic
Vulnerability 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
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-7.4.4.0.pdf
- https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.0.2.0.pdf
- https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.1.0.0.pdf
- https://community.silabs.com/068Vm00000Sadyn
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Affected Vendor
silabs.com
View all reports →Affected Software
Zigbee
Vulnerable Versions:
0, 4.4.3
Timeline
Official Publish:
July 30th, 2025
Last Modified:
July 30th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.