CVE-2025-1221

medium

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

References

https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.1.0.0.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-7.4.4.0.pdf

https://community.silabs.com/068Vm00000Sadyn

Details

Source: Mitre, NVD

Published: 2025-07-30

Updated: 2025-07-30

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

CVSS v4

Base 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

Severity: Medium

EPSS

EPSS: 0.00019