FortiAuthenticator 6.6 · Version Status
FortiAuthenticator 6.6 End of Life Date
FortiAuthenticator 6.6 end-of-life date, support status, and CVE risk. Data reconciled from official vendor documentation and endoflife.date at every build; the source of each date is on the product page.
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FortiAuthenticator 6.6 is actively supported. EOL date: June 11, 2028.
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EOL Date
Jun 11, 2028
641 days remaining
Latest Release
6.6
Standard release
Release Date
Dec 11, 2023
FortiAuthenticator 6.6 series
Lifecycle detail
FortiAuthenticator 6.6 was released on December 11, 2023 and support is scheduled to end on June 11, 2028 — a planned supported lifespan of 4 years and 6 months, in line with the 4 years and 6 months median for FortiAuthenticator releases.
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 →
All FortiAuthenticator Versions
| Version | Latest | EOL Date | Status |
|---|
| 1.0 |
1.0 |
Jul 8, 2014 |
EOL |
| 1.1 |
1.1 |
Sep 21, 2014 |
EOL |
| 1.2 |
1.2 |
Jan 11, 2015 |
EOL |
| 1.3 |
1.3 |
May 14, 2015 |
EOL |
| 2.0 |
2.0 |
Apr 24, 2017 |
EOL |
| 2.1 |
2.1 |
Aug 28, 2017 |
EOL |
| 2.2 |
2.2 |
Oct 19, 2017 |
EOL |
| 3.0 |
3.0 |
Apr 22, 2018 |
EOL |
What does FortiAuthenticator 6.6 end of life mean?
When FortiAuthenticator 6.6 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 FortiAuthenticator 6.6 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to FortiAuthenticator 8.0 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does FortiAuthenticator 6.6 reach end of life?
FortiAuthenticator 6.6 reached end of life on June 11, 2028. That is 641 days remaining.
Is FortiAuthenticator 6.6 still supported?
Yes, FortiAuthenticator 6.6 is currently supported. The EOL date is June 11, 2028.
What should I upgrade to from FortiAuthenticator 6.6?
The recommended upgrade from FortiAuthenticator 6.6 is
FortiAuthenticator 8.0 — the latest actively supported version. Check the
FortiAuthenticator full timeline for all supported versions.
What are the security risks of running FortiAuthenticator 6.6 past EOL?
When FortiAuthenticator 6.6 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 FortiAuthenticator should migrate immediately or implement compensating controls.