CVE-2026-6924: Silicon Labs Matter GitHub

High severity, CVSS 8.7. EPSS: 0.4% chance of exploitation in the next 30 days.

A bug in the entropy initialization for SiWx917 causes the DRBG to use a predictable seed. As such, all random numbers generated in the Matter code use the same stream of numbers. This vulnerability was discovered after the impacted repository was already deprecated.

Affected products

• Silicon Labs Silicon Labs Matter GitHub: version 0 only

Published 2026-07-23. Last modified 2026-09-08.