CVE-2024-20504: Cisco Asyncos

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

A vulnerability in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager, Secure Email Gateway, and Secure Web Appliance could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user of the interface. This vulnerability is due to insufficient validation of user input. An attacker could exploit this vulnerability by persuading a user of an affected interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

Affected products

• Cisco Asyncos: version 14.0.0-698 only; version 14.2.0-620 only; version 14.2.1-020 only; version 14.3.0-032 only; version 15.0.0-104 only; version 15.0.1-030 only; …

Published 2024-11-06. Last modified 2026-06-17.