CVE-2025-20236: Cisco Webex Teams

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability in the custom URL parser of Cisco Webex App could allow an unauthenticated, remote attacker to persuade a user to download arbitrary files, which could allow the attacker to execute arbitrary commands on the host of the targeted user. This vulnerability is due to insufficient input validation when Cisco Webex App processes a meeting invite link. An attacker could exploit this vulnerability by persuading a user to click a crafted meeting invite link and download arbitrary files. A successful exploit could allow the attacker to execute arbitrary commands with the privileges of the targeted user.

Affected products

• Cisco Webex Teams: version 44.6 only; version 44.6.0.29928 only; version 44.6.0.30148 only; version 44.7 only; version 44.7.0.30141 only; version 44.7.0.30285 only

Published 2025-04-16. Last modified 2026-06-17.