What’s Vulnerable › Vulnerabilities

CVE-2020-27640

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-18 · updated 2026-06-17

Description

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

How to fix

Upgrade to a fixed version: Mitel Mivoice 6930 Firmware 1.5.3; Mitel Mivoice 6940 Firmware 1.5.3. Check the vendor advisory for mitigations.

References

• https://www.mitel.com/support/security-advisories
• https://www.mitel.com/support/security-advisories

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