CVE-2018-18819: Mitel MiCollab

Medium severity, CVSS 5.3. EPSS: 1.4% chance of exploitation in the next 30 days.

A vulnerability in the web conference chat component of MiCollab, versions 7.3 PR6 (7.3.0.601) and earlier, and 8.0 (8.0.0.40) through 8.0 SP2 FP2 (8.0.2.202), and MiVoice Business Express versions 7.3 PR3 (7.3.1.302) and earlier, and 8.0 (8.0.0.40) through 8.0 SP2 FP1 (8.0.2.202), could allow creation of unauthorized chat sessions, due to insufficient access controls. A successful exploit could allow execution of arbitrary commands.

Affected products

• Mitel MiCollab: from 7.3, up to and including 7.3.0.601; from 8.0.0.40, up to and including 8.0.2.202
• Mitel MiVoice Business Express: from 7.0, up to and including 7.3.1.302; from 8.0.0.40, up to and including 8.0.2.202

Published 2019-11-12. Last modified 2026-06-17.