F5 BIG-IP

F5 · current 21.1.0

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The current version of F5 BIG-IP is 21.1.0 (as of 05/05/2026). patchletter checks the official source daily and emails you new releases.

Actively exploited vulnerabilities

The US cybersecurity agency CISA lists these vulnerabilities in its catalog of Known Exploited Vulnerabilities. What CISA does not carry does not appear in this list — even where it is being exploited.

  • CVE-2021-22986F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution VulnerabilityRansomware

    9.8 critical · over the network, without login · CISA deadline was 17 Nov 21

  • CVE-2020-5902F5 BIG-IP Traffic Management User Interface (TMUI) Remote Code Execution VulnerabilityRansomware

    9.8 critical · over the network, without login · CISA deadline was 3 May 22

  • CVE-2022-1388F5 BIG-IP Missing Authentication VulnerabilityRansomware

    9.8 critical · over the network, without login · CISA deadline was 31 May 22

  • CVE-2023-46747F5 BIG-IP Configuration Utility Authentication Bypass VulnerabilityRansomware

    9.8 critical · over the network, without login · CISA deadline was 21 Nov 23

  • CVE-2021-22991F5 BIG-IP Traffic Management Microkernel Buffer Overflow

    9.8 critical · over the network, without login · CISA deadline was 1 Feb 22

  • CVE-2025-53521F5 BIG-IP Stack-Based Buffer Overflow Vulnerability

    9.8 critical · over the network, without login · CISA deadline was 30 Mar

  • CVE-2023-46748F5 BIG-IP Configuration Utility SQL Injection Vulnerability

    8.8 high · over the network, with a basic account · CISA deadline was 21 Nov 23

Source: CISA KEV. The CVE is matched to the product automatically — when in doubt, the linked NVD entry applies.

BSI security advisories

Advisories the German BSI (CERT-Bund) published for this product. Whether your version is affected is stated in the advisory itself.

All BSI advisories →

Support cycles (endoflife.date)

CycleLatest versionStatus
21.1LTS21.1.0EOL 5 May 29
21.021.0.0End of Life
17.5LTS17.5.1EOL 1 Jan 29
17.1LTS17.1.3EOL 31 Mar 27
17.017.0.0End of Life
16.1LTS16.1.6End of Life
16.016.0.1.1End of Life
15.1LTS15.1.10End of Life

Version history & changelog · as detected by patchletter

VersionChannelDateNotes
21.1.0LTS05/05/2026

Frequently asked questions

What is the latest version of F5 BIG-IP?
F5 BIG-IP 21.1.0, released 05/05/2026. patchletter checks the vendor's official source daily for new releases.
Where can I find the F5 BIG-IP release notes?
The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
How do I get notified about new F5 BIG-IP updates?
Tick F5 BIG-IP off in the catalogue and leave your address. From then on new versions go out by email — one at a time, or bundled in the daily or weekly digest.

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Also available: ?v=eol (end of support) and ?v=cve (actively exploited).

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