Mitel security advisory (AV26-611)

Serial number: AV26-611
Date: June 17, 2026

On June 17, 2026, Mitel published a security advisory to address vulnerabilities in the following products. Included were critical updates for the following:

  • MiCollab - multiple versions
  • MiVoice Business Solution Virtual Instance (MiVB SVI) - version 2.1.0.9-2 and prior

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.

Date modified: