CVE-2020-3345: Cisco Webex Meetings

Medium severity, CVSS 4.3. EPSS: 1.2% chance of exploitation in the next 30 days.

A vulnerability in certain web pages of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to modify a web page in the context of a browser. The vulnerability is due to improper checks on parameter values within affected pages. An attacker could exploit this vulnerability by persuading a user to follow a crafted link that is designed to pass HTML code into an affected parameter. A successful exploit could allow the attacker to alter the contents of a web page to redirect the user to potentially malicious web sites, or the attacker could leverage this vulnerability to conduct further client-side attacks.

Affected products

• Cisco Webex Meetings: before 40.6.0 (fixed in 40.6.0)
• Cisco Webex Meetings Server: up to and including 4.0; version 4.0 only

Published 2020-07-16. Last modified 2026-06-17.