CVE-2020-28351: Mitel Shoretel Firmware

Medium severity, CVSS 6.1. EPSS: 16% chance of exploitation in the next 30 days.

The conferencing component on Mitel ShoreTel 19.46.1802.0 devices could allow an unauthenticated attacker to conduct a reflected cross-site scripting (XSS) attack (via the PATH_INFO to index.php) due to insufficient validation for the time_zone object in the HOME_MEETING& page.

Affected products

• Mitel Shoretel Firmware: version 19.46.1802.0 only

Published 2020-11-09. Last modified 2026-06-17.