CVE-2020-5886

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-04-30 · updated 2026-06-17
Weakness: CWE-319

Description

On versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.3, and 12.1.0-12.1.5.1, BIG-IP systems setup for connection mirroring in a High Availability (HA) pair transfers sensitive cryptographic objects over an insecure communications channel. This is a control plane issue which is exposed only on the network used for connection mirroring.

Affected products

F5 BIG-IP APM: from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
BIG-IP: from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
F5 Big-Ip Analytics: from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
F5 Networks, Inc. BIG-IP (AAM): from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
BIG-IP ASM: from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
F5 BIG-IP DNS: from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
F5 Big-Ip Fraud Protection Service: from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
F5 Big-Ip Global Traffic Manager: from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
F5 Big-Ip Link Controller: from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
F5 BIG-IP (LTM): from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1
F5 Networks, Inc. BIG-IP (PEM): from 12.1.0 through 12.1.5.1; from 13.1.0 through 13.1.3.3; from 14.1.0 through 14.1.2.3; from 15.0.0 through 15.1.0.1

References

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