Bug ID 2386021: TMM fails to load large number of bot defense signatures

Last Modified: Jul 10, 2026

Affected Product(s):
BIG-IP ASM(all modules)

Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.1.3.1, 17.1.3.2, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 21.0.0, 21.0.0.1

Opened: Jul 08, 2026

Severity: 2-Critical

Symptoms

TMM crashes during config load attempt

Impact

TMM cannot load config

Conditions

- 163 security bot-defense profiles - 2670 security bot-defense signatures

Workaround

Remove unnecessary bot-defense profiles

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips