CVE-2023-20028: Cisco Secure Email And Web Manager

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Multiple vulnerabilities in the web-based management interface of Cisco AsyncOS Software for Cisco Secure Email and Web Manager; Cisco Secure Email Gateway, formerly Cisco Email Security Appliance (ESA); and Cisco Secure Web Appliance, formerly Cisco Web Security Appliance (WSA), could allow a remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. For more information about these vulnerabilities, see the Details section of this advisory.

Affected products

• Cisco Secure Email And Web Manager: version 14.0.0-418 only; version 14.0.1-033 only; version 14.0.1-053 only; version 15.0.0-050 only; version 15.0.0-256 only
• Cisco Secure Email Gateway: version 14.0.0-418 only; version 14.0.1-033 only; version 14.0.1-053 only; version 15.0.0-050 only; version 15.0.0-256 only
• Cisco Web Security Appliance: version 14.0.0-418 only; version 14.0.1-033 only; version 14.0.1-053 only; version 15.0.0-050 only; version 15.0.0-256 only

Published 2023-06-28. Last modified 2026-06-17.