BugZero | F5 BugID 977053 - TMM crash on standby due to invalid MR router inst...

F5 - Defect ID: 977053

TMM crash on standby due to invalid MR router instance

F5 - Defect ID: 977053

TMM crash on standby due to invalid MR router instance

Last updated on July 18th, 2026

BugZero Risk Score
6.9 Medium

Overall: 6.9

Severity: 7.3

Community: 4.2

Lifecycle: 8.3

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Bug Details

Priority: 3-Major
Status: Verified
Impact Category: Service Provider

Description

Symptoms

In high availability (HA) setup, TMM on the standby device may crash due to an invalid Message Routing (MR) router instance.

Impact

Traffic disrupted while tmm restarts.

Conditions

-- HA environment. -- Connection mirroring is enabled.

Workaround

None.

Fix Information

TMM on the standby device no longer crashes under these conditions.

Change history

Links

Original Vendor Announcement

Relevant Products

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Affected versions:14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1

Fixed versions: 16.1.0, 16.0.1.2, 15.1.3, 14.1.4.1

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 16.1.0, 16.0.1.2, 15.1.3, 14.1.4.1

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F5 - Defect ID: 977053

TMM crash on standby due to invalid MR router instance

F5 - Defect ID: 977053

TMM crash on standby due to invalid MR router instance

Last updated on July 18th, 2026

BugZero Risk Score6.9 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 977053

TMM crash on standby due to invalid MR router instance

F5 - Defect ID: 977053

TMM crash on standby due to invalid MR router instance

Last updated on July 18th, 2026

BugZero Risk Score6.9 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.9 Medium

BugZero Risk Score
6.9 Medium