CVE-2021-22998

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CVSS 3.1

5.3 medium

EPSS

<1%p59

Published

Mar 31, 2021 (Mar 31, 2021)

Modified

Jun 17, 2026

Description

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, SYN flood protection thresholds are not enforced in secure network address translation (SNAT) listeners. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Vendors: f5
Products: big-ip access policy manager, big-ip advanced firewall manager, big-ip advanced web application firewall, big-ip analytics, big-ip application acceleration manager, big-ip application security manager, big-ip ddos hybrid defender, big-ip domain name system, big-ip fraud protection service, big-ip global traffic manager, big-ip link controller, big-ip local traffic manager
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

NVD CVE.org GitHub PoCs EPSS (0.9%)

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