Summary iPlain-English security verdict for F5 BIG-IP, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
F5 BIG-IP currently scores 35/100 — high risk. No tracked vulnerabilities are currently known to be exploited in the wild. The latest supported release is 21.1.0. Upgrade soon — serious vulnerabilities are open and a fix usually exists. Note: this product is assessed at the product level on recent (365-day) activity rather than an exact per-version match, so it is never marked a confident "healthy".
Disclosure trend iNew CVEs published for F5 BIG-IP each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2026-41225 CRITICAL CWE-648 EPSS 0% → see advisoryGet alerted about F5 BIG-IP
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Versions & lifecycle iWhen each release line stops receiving security patches (end-of-life). After EOL there are no more fixes — plan upgrades before these dates.
How long each F5 BIG-IP release line is supported — and when it sunsets.
Full F5 BIG-IP end-of-life dates & support timeline →
Frequently asked
Is F5 BIG-IP safe and patched?
F5 BIG-IP currently scores 35/100 — high risk. No tracked vulnerabilities are currently known to be exploited in the wild. The latest supported release is 21.1.0. Upgrade soon — serious vulnerabilities are open and a fix usually exists. Note: this product is assessed at the product level on recent (365-day) activity rather than an exact per-version match, so it is never marked a confident "healthy".
What should I do about F5 BIG-IP now?
Upgrade F5 BIG-IP to the latest supported release (21.1.0) or later and apply available security updates, then confirm against F5's official advisory.
When does F5 BIG-IP reach end-of-life?
The latest supported F5 BIG-IP release is 21.1.0. After end-of-life a release no longer receives security patches.
Which versions of F5 BIG-IP are still receiving security updates?
Supported F5 BIG-IP release lines (latest 21.1.0): 21.1, 21.0, 17.5, 17.1. End-of-life releases no longer receive security patches.
product-level posture (last 365d); exact per-version verdict pending precise version mapping
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against F5's official advisory before you patch or upgrade — F5 BIG-IP official site ↗