Last Modified: Oct 09, 2026
Affected Product(s):
BIG-IP TMOS
Known Affected Versions:
17.5.1.8, 17.5.1.9, 21.1.0, 21.1.0.1, 21.1.0.2
Opened: Sep 14, 2026 Severity: 3-Major
TMM repeatedly crashes and enters a crash loop when an empty string is configured in the auth-context-methods for SAML AAA settings. This may lead to service disruptions and impact application availability
TMM crashes in loop
Run the following commands in the BIG-IP tmsh shell - create apm aaa saml SP_SAML auth-context-methods add { foo df } entity-id http://your.sp.saml.com otters sp-host your.sp.saml.host - modify apm aa saml SP_SAML auth-context-methods add { "" } - save sys config - load sys config
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