CVE-2023-51392 Silicon Labs EFR32xxx parts with classic key storage do not use hardware accelerated AES-CCM
Silicon Labs Ember ZNet SDK uses software AES-CCM instead of hardware accelerators, exposing keys to side-channel attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-51392?
CVE-2023-51392 is a medium-severity vulnerability in silabs.com Ember ZNet SDK, published on 23 Feb 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Ember ZNet between v7.2.0 and v7.4.0 used software AES-CCM instead of integrated hardware cryptographic accelerators, potentially increasing risk of electromagnetic and differential power analysis sidechannel attacks.
Which versions are affected by CVE-2023-51392?
It affects 1 product.
Products include Silabs Emberznet.
How do I fix CVE-2023-51392?
No fix has been published for CVE-2023-51392 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-51392 being exploited?
There is no known exploitation of CVE-2023-51392 in the wild and no public exploit code.
Other vulnerabilities in silabs.com Ember ZNet SDK
- CVE-2023-41094 Touchlink authentication bypass due to packets processed after timeout or out of range in Ember ZNet
- CVE-2026-85079 Out-of-bounds write in Zigbee Simple_Desc_req handling
- CVE-2026-94502 Out-of-bounds write in Zigbee Publish Price Matrix handling
- CVE-2026-4526 Global ZCL command parser missing minimum-length validation in EmberZNet v9.0.2
- CVE-2026-47145 Color Control hue/saturation assertion abort in EmberZNet v9.0.2
Sources
Also known as GHSA-qfrv-fmc5-hmmh.