The BT122 module from silabs.com contains a vulnerability identified as CVE-2026-65932, categorized under CWE-440 (Expected Behavior Violation). The issue arises when the module receives a plaintext 'pause encryption response' message, which causes it to stop advertising. This leads to a denial of service condition, disrupting normal operation. The CVSS 4.0 base score is 5.3, reflecting a medium severity with attack vector as adjacent network and no privileges or user interaction required. No vendor advisory or patch information is currently available.

The vulnerability results in a denial of service by causing the BT122 module to cease advertising upon receipt of a specific plaintext message. This disrupts the device's normal functionality and could impact systems relying on its Bluetooth advertising capabilities. There is no indication of privilege escalation, data confidentiality, or integrity impact.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should monitor vendor communications for updates. No specific mitigations or workarounds have been provided by the vendor at this time.