PT-2026-64178 · Silicon · Silicon Labs Matter Github

CVE-2026-6924 · Published 2026-07-23 · Updated 2026-07-23

NVD

CVSS v4.0

8.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Fix

Weakness Enumeration

CWE-336

Related Identifiers

CVE-2026-6924

Affected Products

Silicon Labs Matter Github

References · 3

• https://github.com/SiliconLabs/matter/tree/release_2.3.1-1.3 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-6924 · Security Note
• https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/a45Vm0000009SzZIAU?operationContext=S1 · Vendor Advisory