VULNERABILITY INTELLIGENCE
CVE-2025-1221
EPSS probability0.21%
CISA KEVNot currently listed
Published2025-07-30
Last modified2026-06-17
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
Weakness classification
- product-security@silabs.com: CWE-667