CVE-2021-1502: Cisco Webex Meetings Desktop

High severity, CVSS 7.8. EPSS: 1.1% chance of exploitation in the next 30 days.

A vulnerability in Cisco Webex Network Recording Player for Windows and MacOS and Cisco Webex Player for Windows and MacOS could allow an attacker to execute arbitrary code on an affected system. The vulnerability is due to insufficient validation of values within Webex recording files formatted as either Advanced Recording Format (ARF) or Webex Recording Format (WRF). An attacker could exploit the vulnerability by sending a user a malicious ARF or WRF file through a link or email attachment and persuading the user to open the file. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of the targeted user.

Affected products

• Cisco Webex Meetings Desktop: affected versions not specified
• Cisco Webex Meetings Online: affected versions not specified
• Cisco Webex Meetings Server: version 4.0 only
• Cisco Webex Network Recording Player: affected versions not specified; before 41.5 (fixed in 41.5)
• Cisco Webex Teams: version 3.0.15485.0 only

Published 2021-06-04. Last modified 2026-06-17.