CVE-2026-6924

CVE-2026-6924 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-336.

Key facts

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.

Frequently asked questions

What is CVE-2026-6924?
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.
How severe is CVE-2026-6924?
CVE-2026-6924 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2026-6924 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-6924?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-6924 published?
CVE-2026-6924 was published on 2026-07-23 and last updated on 2026-09-08.

References

Other CWE-336 vulnerabilities

Browse all CWE-336 vulnerabilities →