FortiADC 4.1 · Version Status
FortiADC 4.1 End of Life Date
FortiADC 4.1 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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FortiADC 4.1 is past end of life. This version no longer receives security patches. 2831 days past EOL — migrate to a supported version immediately.
EOL Date
Dec 9, 2018
2831 days past EOL
Latest Release
4.1
Standard release
Release Date
Jun 9, 2014
FortiADC 4.1 series
Lifecycle detail
FortiADC 4.1 was released on June 9, 2014 and support ended on December 9, 2018 — a supported lifespan of 4 years and 6 months, in line with the 4 years and 6 months median for FortiADC releases. It has been without security patches for 7 years and 9 months. 12 newer FortiADC releases have shipped since.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
20/20 Named in CISA 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 FortiADC 4.1 support is available
Commercial vendors offer security patches beyond EOL. Compare your options.
Compare Options →
| Version | Latest | EOL Date | Status |
|---|
| 2.1 |
2.1 |
Nov 8, 2017 |
EOL |
| 3.0 |
3.0 |
Jan 19, 2018 |
EOL |
| 3.1 |
3.1 |
Jun 5, 2018 |
EOL |
| 3.2 |
3.2 |
Jul 31, 2018 |
EOL |
| 4.0 |
4.0 |
Oct 3, 2018 |
EOL |
| → 4.1 |
4.1 |
Dec 9, 2018 |
EOL |
| 4.2 |
4.2 |
Jul 22, 2019 |
EOL |
| 4.3 |
4.3 |
Jan 31, 2020 |
EOL |
What does FortiADC 4.1 end of life mean?
When FortiADC 4.1 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 FortiADC 4.1 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to FortiADC 8.0 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does FortiADC 4.1 reach end of life?
FortiADC 4.1 reached end of life on December 9, 2018. This version is no longer receiving security patches.
Is FortiADC 4.1 still supported?
No. FortiADC 4.1 reached end of life on December 9, 2018 and is no longer receiving security patches.
What should I upgrade to from FortiADC 4.1?
The recommended upgrade from FortiADC 4.1 is
FortiADC 8.0 — the latest actively supported version. Check the
FortiADC full timeline for all supported versions.
What are the security risks of running FortiADC 4.1 past EOL?
When FortiADC 4.1 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 FortiADC should migrate immediately or implement compensating controls.