CVE-2026-6924

Published: Jul 23, 2026Modified: Sep 8, 2026

8.7

Vector

CVSS:4.0/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

CVSS:4.0/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:XShow less

Source: product-security@silabs.com (Secondary)

Description

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.

Related CWEs

CWE-336

Same Seed in Pseudo-Random Number Generator (PRNG)

A Pseudo-Random Number Generator (PRNG) uses the same seed each time the product is initialized.

References (2)

https://github.com/SiliconLabs/matter/tree/release_2.3.1-1.3

Source: product-security@silabs.com

https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/a45Vm0000009SzZIAU?operationContext=S1

Source: product-security@silabs.com

Timeline

No history available yet.