BugZero | F5 BugID 466877 - When BIG-IP is used as SAML SP, signatures created...

F5 - Defect ID: 466877

When BIG-IP is used as SAML SP, signatures created by IBM Tivoli Federated Identity Manager may fail validation

F5 - Defect ID: 466877

When BIG-IP is used as SAML SP, signatures created by IBM Tivoli Federated Identity Manager may fail validation

Last updated on July 18th, 2026

BugZero Risk Score
6.7 Medium

Overall: 6.7

Severity: 7.3

Community: 4.2

Lifecycle: 7.0

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Bug Details

Priority: 3-Major
Status: Verified
Impact Category: Access Policy Manager

Description

Symptoms

Signature validation fails when received signed assertion is generated by IBM Tivoli Federated Identity Manager.

Impact

Issue impacts SSO, users cannot login with SAML.

Conditions

This issue occurs when the BIG-IP system is configured as SP and received assertion is signed.

Workaround

This issue has no workaround at this time.

Fix Information

Issue with signature validation is fixed.

Change history

Links

Original Vendor Announcement

Relevant Products

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Affected versions:11.5.1, 11.5.1 hf1, 11.5.1 hf2, 11.5.1 hf3, 11.5.1 hf4, 11.5.1 hf5, 11.5.1 hf6, 11.5.1 hf7, 11.5.1 hf8, 11.5.1 hf9, 11.5.1 hf10, 11.5.1 hf11, 11.5.2, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 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, 11.6.1 hf1, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3

Fixed versions: 12.0.0

Relevant Products

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Fixed versions: 12.0.0

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F5 - Defect ID: 466877

When BIG-IP is used as SAML SP, signatures created by IBM Tivoli Federated Identity Manager may fail validation

F5 - Defect ID: 466877

When BIG-IP is used as SAML SP, signatures created by IBM Tivoli Federated Identity Manager may fail validation

Last updated on July 18th, 2026

BugZero Risk Score6.7 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 466877

When BIG-IP is used as SAML SP, signatures created by IBM Tivoli Federated Identity Manager may fail validation

F5 - Defect ID: 466877

When BIG-IP is used as SAML SP, signatures created by IBM Tivoli Federated Identity Manager may fail validation

Last updated on July 18th, 2026

BugZero Risk Score6.7 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.7 Medium

BugZero Risk Score
6.7 Medium