CVE-2025-1221 (GCVE-0-2025-1221)

Vulnerability from cvelistv5 – Published: 2025-07-30 08:09 – Updated: 2025-07-30 13:40
VLAI?
Title
DoS in Zigbee device due to heavy traffic
Summary
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
Severity ?
5.9 (Medium)
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
CWE
Assigner
References
Impacted products
Vendor Product Version
silabs.com Zigbee Affected: 0 , ≤ 4.3.3 (semver)
Affected: 4.4.3 (semver)
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    silabs.com Zigbee Affected: 0 , ≤ 2024.6.1 (semver)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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