Bug ID 2016465: Policy auto merge does not work for Base64 Decoding

Last Modified: May 05, 2026

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

Known Affected Versions:
17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5

Fixed In:
17.5.1.6

Opened: Aug 11, 2025

Severity: 3-Major

Symptoms

If an entity (Parameters, Cookies, Headers) in two policies have differing values for how to handle Base64 values (enabled, disabled, required), policy diff does not merge the values correctly.

Impact

Expected changes may not be made to the merged policy resulting in unexpected Base64 value handling.

Conditions

An entity (Parameters, Cookies, Headers) in two policies have differing values for how to handle Base64 values (enabled, disabled, required), policy diff does not merge the values correctly.

Workaround

The values can be changed manually through GUI or REST.

Fix Information

Policy Diff/Merge functions correctly for differing Base64 Decoding values.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips