CVE-2023-2683: Connection update while closing connection may lead to denial-of-service

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-15 · updated 2026-06-17
Weakness: CWE-401

Description

A memory leak in the EFR32 Bluetooth LE stack 5.1.0 through 5.1.1 allows an attacker to send an invalid pairing message and cause future legitimate connection attempts to fail. A reset of the device immediately clears the error.

Affected products

silabs.com Bluetooth SDK: from 5.0.0 through 5.1.1

References

https://github.com/SiliconLabs
https://https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/0698Y00000U2U1QQAV?operationContext=S1
https://github.com/SiliconLabs
https://https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/0698Y00000U2U1QQAV?operationContext=S1

Get alerted when CVE-2023-2683 or the next vulnerability affects your stack