Last Modified: Jan 13, 2026
Affected Product(s):
BIG-IP TMOS
Known Affected Versions:
17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3
Opened: Jan 07, 2026 Severity: 3-Major
BIG-IP GUI users are logged out after 1200 seconds of inactivity, regardless of the configured value of sys httpd auth-pam-idle-timeout when the value exceeds 1200 seconds. HTTPD / mod_auth_pam debug logs explicitly report: AUTHCACHE Error processing cookie XXXXX - Cookie Expired (idle_timeout=1200)
GUI users are logged out after 1200 seconds of inactivity.
Sys httpd auth-pam-idle-timeout is configured to a value greater than 1200 seconds.
Login back with the same credentials once after getting logged out
None