Bug ID 2483197: For BIGIPAuthCookie/BIGIPAuthUsernameCookie change SameSite value to Lax

Last Modified: Aug 31, 2026

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

Known Affected Versions:
17.1.3.1, 17.1.3.2, 17.1.3.4, 17.5.1.4, 17.5.1.5, 17.5.1.6, 17.5.1.8, 21.0.0.1, 21.0.0.2, 21.0.0.3

Opened: Aug 24, 2026

Severity: 3-Major

Symptoms

BIGIPAuthCookie/BIGIPAuthUsernameCookie SameSite=Strict breaks APM WebTop redirect logins; this behaviour is seen after setting these cookie values to Strict

Impact

It breaks APM WebTop redirect logins for cert/CAC auth

Conditions

N/A

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips