CVE-2020-5949: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

On BIG-IP versions 14.0.0-14.0.1 and 13.1.0-13.1.3.4, certain traffic pattern sent to a virtual server configured with an FTP profile can cause the FTP channel to break.

Affected products

  • F5 BIG-IP Access Policy Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Advanced Firewall Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Advanced Web Application Firewall: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Analytics: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Application Acceleration Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Application Security Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Ddos Hybrid Defender: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Domain Name System: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Fraud Protection Service: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Global Traffic Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Link Controller: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Local Traffic Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP Policy Enforcement Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)
  • F5 BIG-IP SSL Orchestrator: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.0.0, before 14.1.0 (fixed in 14.1.0)

Published 2020-12-11. Last modified 2026-06-17.