CVE-2026-6924
Predictable DRBG seed in SiWx917 causes identical RNG streams in Matter devices.
Is CVE-2026-6924 being exploited?
Not confirmed. CVE-2026-6924 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-6924?
CVE-2026-6924 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-6924?
Not known from our data. No patch reference has been recorded for CVE-2026-6924, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-6924 affect?
CVE-2026-6924 affects Silicon Labs SiWx917-based devices, Matter SDK implementations using SiWx917 DRBG, IoT devices using impacted firmware/repository. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-6924?
Isolate/replace affected devices; rotate cryptographic keys; apply vendor firmware when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers can predict device RNG, enabling key recovery, device impersonation, session hijack, and decryption of communications.
Immediate action required