Secure Firewall Threat Defense 6.4
FTD-6.4Cisco · OS release · Secure Firewall Threat Defense Series
Unsupported since · 255 days ago
Secure Firewall Threat Defense 6.4 reached end of support on (255 days ago). Last available for order .
- End of sale
- 3y 8mo ago
- End of software maintenance
- 2y 8mo ago
- End of support
- 8mo ago
Lifecycle Milestones
| End of sale | 3y 8mo ago | |
|---|---|---|
| End of software maintenance | 2y 8mo ago | |
| Last date of support | 8mo ago |
Is Secure Firewall Threat Defense 6.4 still maintained?
No. Cisco no longer maintains Secure Firewall Threat Defense 6.4; support ended on 2026-02-28. It receives no fixes of any kind, including security patches. Plan an upgrade to a maintained release. See Cisco's lifecycle bulletin.
When do security fixes for Secure Firewall Threat Defense 6.4 stop?
Cisco has not published an end-of-engineering date for Secure Firewall Threat Defense 6.4.
What should I upgrade Secure Firewall Threat Defense 6.4 to?
Upgrade to a currently maintained Cisco release. Check Cisco's release notes for the recommended version.
Secure Firewall Threat Defense 6.4 Release Lifecycle
Secure Firewall Threat Defense 6.4 is a Cisco Secure Firewall Threat Defense software release. Releases are maintained on a fixed schedule: Cisco ships fixes and security patches until the release reaches end of engineering, after which a device must be upgraded to a maintained release to stay patchable. The dates below are milestones for the software train, not for any specific appliance — hardware running this release has its own separate lifecycle. This product has reached end of life as of , meaning Cisco no longer provides technical support, software updates, or hardware replacement for this product. It was last available for purchase on . Organizations still running the Secure Firewall Threat Defense 6.4 should plan a migration .