Cisco Secure Email Gateway vulnerabilities

5 CVEs affecting Cisco Secure Email Gateway, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2025-20153, published 2025-02-19.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2024-20401, published 2024-07-17. Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days. A vulnerability in the content scanning and message filtering features of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to overwrite arbitrary files on the underlying…
CVE-2023-20119, published 2023-06-28. Medium severity, CVSS 6.1. EPSS: 0.5% 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, formerly known as Content Security Management Appliance (SMA) could allow an…
CVE-2023-20120, published 2023-06-28. Medium severity, CVSS 6.1. 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…
CVE-2023-20028, published 2023-06-28. 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…
CVE-2025-20153, published 2025-02-19. Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days. A vulnerability in the email filtering mechanism of Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to bypass the configured rules and allow emails that should have been…