CVE-2025-1221
MEDIUM EPSS 6.7%
Published Jul 30, 202511mo ago · Modified Jun 17, 20261w ago
5.9 CVSS 4.0
Published Jul 30, 2025 11mo ago
Last Modified Jun 17, 2026 1w ago
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
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Adjacent
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
6.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-667
References 4
- community.silabs.com https://community.silabs.com/068Vm00000Sadyn
- silabs.com https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-7.4.4.0.pdf
- silabs.com https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.0.2.0.pdf
- silabs.com https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.1.0.0.pdf
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.