CVE-2025-1221CWE-667

DoS in Zigbee device due to heavy traffic

Medium · published July 30, 2025

CVSS v4.0
5.9
EPSS
0%
Percentile
9.3
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v4.0
5.9 · MEDIUM
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
EPSS
0.00199 · 9.3th percentile
Weakness
CWE-667 · Improper Locking
Published
2025-07-30T08:09Z
EPSS history
Timeline
  • 30 JUL 08:09Z
    DoS in Zigbee device due to heavy traffic
    cvelistv5