Question 1

What is the EOL Risk Score for Cisco Secure Email Gateway 15.5 (FIPS compliant)?

Accepted Answer

Cisco Secure Email Gateway 15.5 (FIPS compliant) has an EOL Risk Score™ of 30 out of 100, placing it in the Medium risk band. The score is calculated from four factors: EOL Recency (0/40), Attack Surface (10/30), CISA KEV Exposure (20/20), and Extended Support Availability (0/10).

Question 2

Is Cisco Secure Email Gateway 15.5 (FIPS compliant) still supported?

Accepted Answer

Cisco Secure Email Gateway 15.5 (FIPS compliant) is currently supported. End of life is scheduled for April 30, 2027. Plan your migration before that date to avoid security risk.

Question 3

When does Cisco Secure Email Gateway 15.5 (FIPS compliant) reach end of life?

Accepted Answer

Cisco Secure Email Gateway 15.5 (FIPS compliant) reached (or will reach) end of life on April 30, 2027. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Cisco Secure Email Gateway 15.5 (FIPS compliant) after end of life?

Accepted Answer

After end of life, Cisco Secure Email Gateway 15.5 (FIPS compliant) no longer receives security patches. Any newly discovered CVEs remain unpatched indefinitely. Organizations running EOL software also face compliance violations under SOC 2, PCI DSS, HIPAA, and ISO 27001, which require use of supported software versions.