Bug ID 561623: Realtime encryption causes high CPU usage in older browsers

Last Modified: Nov 07, 2022

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1

Fixed In:
11.6.1 HF1

Opened: Dec 06, 2015

Severity: 2-Critical


When encrypting using realtime encryption, CPU usage on the browser rises very high


In extreme cases, browser may prompt user to stop the encryption script.


Client: Internet Explorer 8 or below FPS: Configured to encrypt password using realtime encryption


Disable realtime encryption in your anti-fraud policy.

Fix Information

Improved performance of realtime encryption

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips