CVE-2023-51393: Silabs Emberznet

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Due to an allocation of resources without limits, an uncontrolled resource consumption vulnerability exists in Silicon Labs Ember ZNet SDK prior to v7.4.0.0 (delivered as part of Silicon Labs Gecko SDK v4.4.0) which may enable attackers to trigger a bus fault and crash of the device, requiring a reboot in order to rejoin the network.

Affected products

• Silabs Emberznet: before 7.4.0 (fixed in 7.4.0)

Published 2024-02-23. Last modified 2026-06-17.