CVE-2020-5888

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-04-30 · updated 2026-06-17

Description

On versions 15.1.0-15.1.0.1, 15.0.0-15.0.1.2, and 14.1.0-14.1.2.3, BIG-IP Virtual Edition (VE) may expose a mechanism for adjacent network (layer 2) attackers to access local daemons and bypass port lockdown settings.

Affected products

F5 BIG-IP APM: from 14.0.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
BIG-IP: from 14.1.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
F5 Big-Ip Analytics: from 14.0.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
F5 Networks, Inc. BIG-IP (AAM): from 14.1.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
BIG-IP ASM: from 14.0.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
F5 BIG-IP DNS: from 14.0.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
F5 Big-Ip Fraud Protection Service: from 14.0.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
F5 Big-Ip Global Traffic Manager: from 14.0.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
F5 Big-Ip Link Controller: from 14.0.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
F5 BIG-IP (LTM): from 14.1.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2
F5 Networks, Inc. BIG-IP (PEM): from 14.0.0 before 14.1.2.4; from 15.0.0 before 15.0.1.3; from 15.1.0 before 15.1.0.2 — fixed in 14.1.2.4, 15.0.1.3, 15.1.0.2

How to fix

Upgrade to a fixed version: F5 BIG-IP APM 14.1.2.4, 15.0.1.3, 15.1.0.2; BIG-IP 14.1.2.4, 15.0.1.3, 15.1.0.2; F5 Big-Ip Analytics 14.1.2.4, 15.0.1.3, 15.1.0.2; F5 Networks, Inc. BIG-IP (AAM) 14.1.2.4, 15.0.1.3, 15.1.0.2; BIG-IP ASM 14.1.2.4, 15.0.1.3, 15.1.0.2; F5 BIG-IP DNS 14.1.2.4, 15.0.1.3, 15.1.0.2; F5 Big-Ip Fraud Protection Service 14.1.2.4, 15.0.1.3, 15.1.0.2; F5 Big-Ip Global Traffic Manager 14.1.2.4, 15.0.1.3, 15.1.0.2; F5 Big-Ip Link Controller 14.1.2.4, 15.0.1.3, 15.1.0.2; F5 BIG-IP (LTM) 14.1.2.4, 15.0.1.3, 15.1.0.2; F5 Networks, Inc. BIG-IP (PEM) 14.1.2.4, 15.0.1.3, 15.1.0.2. Check the vendor advisory for mitigations.

References

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