CVE-2026-4930 DPA Countermeasures weakening on Series 3 devices
Attackers with code execution can weaken DPA countermeasures in the SYMCRYPTO engine, facilitating cryptographic key extraction via side-channel attacks.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4930?
CVE-2026-4930 is a high-severity vulnerability in silabs.com Simplicity SDK, published on 25 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
SYMCRYPTO is the SiXG301's host side hardware engine accessed by PSA crypto library that accelerates symmetric cryptographic operations (AES encryption/decryption and hashing).
DPA Countermeasures on SYMCRYPTO can be weakened (reduced entropy) by forcing certain seed values if an attacker gains code execution capability on the impacted device.
* Therefore, the keys loaded on SYMCRYPTO may be more vulnerable to extraction through DPA attacks than intended
Weakness: CWE-331
Which versions are affected by CVE-2026-4930?
How do I fix CVE-2026-4930?
No fix has been published for CVE-2026-4930 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4930 being exploited?
There is no known exploitation of CVE-2026-4930 in the wild and no public exploit code.
Sources
Also known as GHSA-7ccr-fw66-p8jj.