# CVE-2026-6924

## Summary

- **CVE ID:** CVE-2026-6924
- **Severity:** HIGH
- **CVSS Score:** 8.7 (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)
- **CWE:** CWE-336
- **Published:** Jul 23, 2026
- **Last Modified:** Jul 24, 2026

## 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.

## Affected Products

- Silicon Labs — Silicon Labs Matter Github (0)

## References

- [CNA](https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/a45Vm0000009SzZIAU?operationContext=S1)
- [CNA](https://github.com/SiliconLabs/matter/tree/release_2.3.1-1.3)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.45%
- **EPSS Percentile:** 37.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._