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. Mitel Product Security Advisory MISA-2026-0005 Mitel Security Bulletins
CSIRTS triage
- What
- Critical vulnerabilities have been identified in Mitel products.
- Who is affected
- Users and administrators of MiCollab and MiVoice Business Solution Virtual Instance.
- Urgency
- Remediation is critical due to the severity of the vulnerabilities.
- Action
- Users should apply the necessary updates as recommended in the advisory.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://cyber.gc.ca/en/alerts-advisories/mitel-security-advisory-av26-611
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