Question 1

What is the EOL Risk Score for Cisco Secure Firewall Threat Defense (FTD) 6.6?

Accepted Answer

Cisco Secure Firewall Threat Defense (FTD) 6.6 has an EOL Risk Score™ of 70 out of 100, placing it in the High risk band. The score is calculated from four factors: EOL Recency (40/40), Attack Surface (10/30), CISA KEV Exposure (20/20), and Extended Support Availability (0/10).

Question 2

Is Cisco Secure Firewall Threat Defense (FTD) 6.6 still supported?

Accepted Answer

Cisco Secure Firewall Threat Defense (FTD) 6.6 is no longer supported — it has passed its end of life date (March 2, 2023). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Cisco Secure Firewall Threat Defense (FTD) 6.6 reach end of life?

Accepted Answer

Cisco Secure Firewall Threat Defense (FTD) 6.6 reached (or will reach) end of life on March 2, 2023. 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 Firewall Threat Defense (FTD) 6.6 after end of life?

Accepted Answer

After end of life, Cisco Secure Firewall Threat Defense (FTD) 6.6 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.