What is CVE-2025-4321?

CVE-2025-4321 is a vulnerability in Silabs.com Rs9116w, classified under CWE-240. Published 2025-11-17.

Is CVE-2025-4321 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Silabs.com Rs9116w

CVE-2025-4321

In a Bluetooth device, using RS9116-WiseConnect SDK experiences a Denial of Service, if it receives malformed L2CAP packets, only hard reset will bring the device to normal operation

Published 2025-11-17 · last modified 2026-10-07.

EPSS exploit prediction

EPSS: 0.002 (7.9th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Silabs.com Rs9116w — versions 0

Weakness classification (CWE)

Public proof-of-concept exploits

References

community.silabs.com/068Vm00000YV9DL (vendor-advisory, permissions-required)

Frequently asked questions

What is CVE-2025-4321?: CVE-2025-4321 is a vulnerability in Silabs.com Rs9116w, classified under CWE-240. Published 2025-11-17.
Is CVE-2025-4321 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.