Cisco ASA 5500-X Series (hardware) ASA 5555-X · Version Status
Cisco ASA 5500-X Series (hardware) ASA 5555-X End of Life Date
Cisco ASA 5500-X Series (hardware) ASA 5555-X end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Cisco ASA 5500-X Series (hardware) ASA 5555-X is past end of life. This version no longer receives security patches. 338 days past EOL — migrate to a supported version immediately.
EOL Date
Sep 30, 2025
338 days past EOL
Latest Release
ASA 5555-X
Standard release
Release Date
—
Cisco ASA 5500-X Series (hardware) ASA 5555-X series
Lifecycle detail
It has been without security patches for 11 months.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
Extended Support
Extended Cisco ASA 5500-X Series (hardware) ASA 5555-X support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
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All Cisco ASA 5500-X Series (hardware) Versions
| Version | Latest | EOL Date | Status |
|---|
| ASA 5505 |
ASA 5505 |
Aug 31, 2022 |
EOL |
| ASA 5512-X |
ASA 5512-X |
Aug 31, 2022 |
EOL |
| ASA 5515-X |
ASA 5515-X |
Aug 31, 2022 |
EOL |
| ASA 5585-X |
ASA 5585-X (SSP-10/20/40/60) |
May 31, 2023 |
EOL |
| ASA 5525-X |
ASA 5525-X |
Sep 30, 2025 |
EOL |
| ASA 5545-X |
ASA 5545-X |
Sep 30, 2025 |
EOL |
| → ASA 5555-X |
ASA 5555-X |
Sep 30, 2025 |
EOL |
| ASA 5506-X |
ASA 5506-X, 5506W-X, 5506H-X |
Aug 31, 2026 |
EOL |
What does Cisco ASA 5500-X Series (hardware) ASA 5555-X end of life mean?
When Cisco ASA 5500-X Series (hardware) ASA 5555-X reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Cisco ASA 5500-X Series (hardware) ASA 5555-X past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to a supported version or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Cisco ASA 5500-X Series (hardware) ASA 5555-X reach end of life?
Cisco ASA 5500-X Series (hardware) ASA 5555-X reached end of life on September 30, 2025. This version is no longer receiving security patches.
Is Cisco ASA 5500-X Series (hardware) ASA 5555-X still supported?
No. Cisco ASA 5500-X Series (hardware) ASA 5555-X reached end of life on September 30, 2025 and is no longer receiving security patches.
What should I upgrade to from Cisco ASA 5500-X Series (hardware) ASA 5555-X?
What are the security risks of running Cisco ASA 5500-X Series (hardware) ASA 5555-X past EOL?
When Cisco ASA 5500-X Series (hardware) ASA 5555-X reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Cisco ASA 5500-X Series (hardware) should migrate immediately or implement compensating controls.