Bug ID 2187197: TMSH allows cust-tag modification from tenant while VLAN tag modification is correctly blocked

Last Modified: May 05, 2026

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

Fixed In:
17.5.1.6

Opened: Dec 18, 2025

Severity: 4-Minor

Symptoms

TMSH allows cust-tag modification from the tenant, while VLAN tag modification is correctly blocked

Impact

User can try to modify using UI and TMSH, So blocked to modify it

Conditions

Modifications of the cust-tag are invalid

Workaround

User can try to modify using UI and TMSH, So blocked to modify it

Fix Information

Cust-tag modification blocked from UI and TMSH

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips