Cisco ASA5555-K9 End of Life & End of Support
Cisco ASA 5555-X Adaptive Security Appliance
Past Last Date of Support (Sep 30, 2025)The ASA 5555-X was the top-of-line ASA 5500-X firewall, end-of-sale 2020-09-04 with support ending 2025-09-30. Cisco directs customers to the Firepower 2100 Series, sold today as the Cisco Secure Firewall 3100 Series.
Cisco ASA5555-K9 lifecycle milestone dates
- End-of-Sale Date
- Sep 4, 2020
- End of Software Maintenance
- Sep 4, 2021
- Last Date of Support (LDoS)
- Sep 30, 2025
Dates per Cisco’s official End-of-Sale/End-of-Life bulletin. Verify against your support contract before acting.
Running past End-of-Sale or Last Date of Support means no new Cisco TAC, hardware replacement, or security fixes. Uniqcli, an authorized Cisco partner, scopes a like-for-like or better replacement, confirms TAA compliance, accepts the Government Purchase Card (GPC), and plans a low-risk cutover.
Compare ASA5555-K9 vs its replacement → · Prefer to keep it running? Renew SmartNet / support instead →
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Frequently asked questions
When is the Cisco ASA5555-K9 end of life?
Cisco announced End-of-Sale for the ASA5555-K9 effective Sep 4, 2020. The Last Date of Support (LDoS) is Sep 30, 2025, after which Cisco no longer provides support. It is past its last date of support.
What replaces the Cisco ASA5555-K9?
Cisco's recommended migration is the Cisco Firepower 2100 Series Appliances. Uniqcli, an authorized Cisco partner, can quote the replacement TAA-compliant and GPC-payable, and help plan the cutover.
Can I still get support for the ASA5555-K9?
No. The ASA5555-K9 passed its Last Date of Support (Sep 30, 2025), so Cisco TAC and hardware replacement are no longer available. Uniqcli can review your install base, confirm coverage, and quote a refresh.