CVE-2025-20180: Cisco Asyncos

Medium severity, CVSS 4.8. 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 and Secure Email Gateway 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. To exploit this vulnerability, the attacker must have valid credentials for a user account with at least the role of Operator.

Affected products

• Cisco Asyncos: version 12.8.1-002 only; version 12.8.1-021 only; version 13.0.0-249 only; version 13.0.0-277 only; version 13.6.1-201 only; version 13.6.2-023 only; …

Published 2025-02-05. Last modified 2026-06-17.