CVE-2020-27640: Mitel MiVoice 6930 Firmware

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

The Bluetooth handset of Mitel MiVoice 6940 and 6930 MiNet phones with firmware before 1.5.3 could allow an unauthenticated attacker within Bluetooth range to pair a rogue Bluetooth device when a phone handset loses connection, due to an improper pairing mechanism. A successful exploit could allow an attacker to eavesdrop on conversations.

Affected products

• Mitel MiVoice 6930 Firmware: before 1.5.3 (fixed in 1.5.3)
• Mitel MiVoice 6940 Firmware: before 1.5.3 (fixed in 1.5.3)

Published 2020-12-18. Last modified 2026-06-17.