CVE-2018-15321: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 4.9. EPSS: 0.9% chance of exploitation in the next 30 days.

When BIG-IP 14.0.0-14.0.0.2, 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, 11.6.0-11.6.3.2, or 11.2.1-11.5.6, BIG-IQ Centralized Management 5.0.0-5.4.0 or 4.6.0, BIG-IQ Cloud and Orchestration 1.0.0, iWorkflow 2.1.0-2.3.0, or Enterprise Manager 3.1.1 is licensed for Appliance Mode, Admin and Resource administrator roles can by-pass BIG-IP Appliance Mode restrictions to overwrite critical system files. Attackers of high privilege level are able to overwrite critical system files which bypasses security controls in place to limit TMSH commands. This is possible with an administrator or resource administrator roles when granted TMSH. Resource administrator roles must have TMSH access in order to perform this attack.

Affected products

F5 BIG-IP Access Policy Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Advanced Firewall Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Analytics: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Application Acceleration Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Domain Name System: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Edge Gateway: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Fraud Protection Service: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Global Traffic Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Link Controller: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Local Traffic Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Policy Enforcement Manager: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Protocol Security Module: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IP Webaccelerator: from 11.2.1, up to and including 11.5.6; from 11.6.0, up to and including 11.6.3.2; from 12.1.0, up to and including 12.1.3.5; from 13.0.0, up to and including 13.1.0.7; from 14.0.0, up to and including 14.0.0.2
F5 BIG-IQ Centralized Management: from 5.0.0, up to and including 5.4.0; version 4.6.0 only
F5 BIG-IQ Cloud And Orchestration: version 1.0.0 only
F5 Enterprise Manager: version 3.1.1 only
F5 Iworkflow: from 2.1.0, up to and including 2.3.0

Published 2018-10-31. Last modified 2026-06-17.