CVE-2020-5906: F5 BIG-IP Access Policy Manager

High severity, CVSS 8.1. EPSS: 1.2% chance of exploitation in the next 30 days.

In versions 13.1.0-13.1.3.3, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, the BIG-IP system does not properly enforce the access controls for the scp.blacklist files. This allows Admin and Resource Admin users with Secure Copy (SCP) protocol access to read and overwrite blacklisted files via SCP.

Affected products

  • F5 BIG-IP Access Policy Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Advanced Firewall Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Analytics: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Application Acceleration Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Application Security Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Domain Name System: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Fraud Protection Service: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Global Traffic Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Link Controller: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Local Traffic Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3
  • F5 BIG-IP Policy Enforcement Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3

Published 2020-07-01. Last modified 2026-06-17.