CVE-2024-3043: Zigbee co-ordinator realignment packet may lead to denial of service

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-27 · updated 2026-06-17
Weakness: CWE-829

Description

An unauthenticated IEEE 802.15.4 'co-ordinator realignment' packet can be used to force Zigbee nodes to change their network identifier (pan ID), leading to a denial of service. This packet type is not useful in production and should be used only for PHY qualification.

Affected products

silabs.com EmberZNet SDK: before 8.0.0 — fixed in 8.0.0

How to fix

Upgrade to a fixed version: silabs.com EmberZNet SDK 8.0.0. Check the vendor advisory for mitigations.

References

https://community.silabs.com/069Vm000005UCH0IAO
https://github.com/SiliconLabs/gecko_sdk
https://community.silabs.com/069Vm000005UCH0IAO
https://github.com/SiliconLabs/gecko_sdk

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