Vulnerability · Published Nov 17, 2025 · Assigned by Silabs
CVE-2025-4321DoS in RS9116W-WiSeConnect L2CAP protocol due to reception of malformed packets
High 7.1
In plain English
A high-severity security flaw in RS9116W from silabs.com. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.2%top 91.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
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
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| silabs.com | RS9116W | 0 – through 2.12.1 |
Weakness: CWE-240, CWE-617 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
- https://community.silabs.com/068Vm00000YV9DL vendor-advisory, permissions-required