CVE-2025-4321 HIGH

CVE-2025-4321: DoS in RS9116W-WiSeConnect L2CAP protocol due to reception of malformed packets

Vendor Silabs.com

Product RS9116W

Weakness CWE-240

Published November 17, 2025

Last update November 17, 2025

View on NVD All CVEs

CVSS base score

7.1/10

Attack vector Adjacent

Attack complexity Low

Privileges required None

User interaction None

Confidentiality —

Integrity —

CVSS 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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

November 17, 2025 CVE published

November 17, 2025 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2025-4321 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/240.html

Related vulnerabilities

04Related CVE

CVE-2021-31890