BIG-IP 21.1 · Version Status
BIG-IP 21.1 End of Life Date
BIG-IP 21.1 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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BIG-IP 21.1 is actively supported. EOL date: May 5, 2029.
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EOL Date
May 5, 2029
966 days remaining
Latest Release
21.1.0
LTS release
Release Date
May 5, 2026
BIG-IP 21.1 series
Lifecycle detail
BIG-IP 21.1 was released on May 5, 2026 and support is scheduled to end on May 5, 2029 — a planned supported lifespan of 3 years, shorter than the 4 years and 1 month median for BIG-IP LTS releases. It is a long-term support (LTS) release, so it carries a longer patch window than the interim releases around it. Its most recent patch is 21.1.0, published May 5, 2026.
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 →
| Version | Latest | EOL Date | Status |
|---|
| 9.0 |
9.0.5 |
May 18, 2007 |
EOL |
| 9.1 |
9.1.3 |
Apr 30, 2009 |
EOL |
| 9.2 |
9.2.5 |
Jul 31, 2008 |
EOL |
| 9.3 |
9.3.1 |
Mar 31, 2012 |
EOL |
| 9.4 |
9.4.8 |
Aug 31, 2013 |
EOL |
| 9.6 |
9.6.1 |
Mar 31, 2012 |
EOL |
| 10.0 |
10.0.1 |
Aug 31, 2013 |
EOL |
| 10.1 |
10.1.0 |
Mar 1, 2016 |
EOL |
What does BIG-IP 21.1 end of life mean?
When BIG-IP 21.1 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 BIG-IP 21.1 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to BIG-IP 21.1 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does BIG-IP 21.1 reach end of life?
BIG-IP 21.1 reached end of life on May 5, 2029. That is 966 days remaining.
Is BIG-IP 21.1 still supported?
Yes, BIG-IP 21.1 is currently supported. The EOL date is May 5, 2029.
What should I upgrade to from BIG-IP 21.1?
The recommended upgrade from BIG-IP 21.1 is
BIG-IP 21.1 — the latest actively supported version. Check the
BIG-IP full timeline for all supported versions.
What are the security risks of running BIG-IP 21.1 past EOL?
When BIG-IP 21.1 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 BIG-IP should migrate immediately or implement compensating controls.