BugZero | F5 BugID 944121 - Missing SNI information when using non-default dom...

F5 - Defect ID: 944121

Missing SNI information when using non-default domain https monitor running in TMM mode.

F5 - Defect ID: 944121

Missing SNI information when using non-default domain https monitor running in TMM mode.

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:
Views: 1

Description

Symptoms

In-TMM https monitors do not send the SNI (Server Name Indication) information for non-default route domain pool members. In-TMM monitors do not send any packet when TLS1.3 monitor is used.

Impact

The TLS connection might fail in case of SNI No SYN packet is sent in case of TLS1.3 monitor

Conditions

-- SNI is configured in serverssl profile -- serverssl profile is assigned to in-tmm https monitors -- https monitors are monitoring pool members that are in a non-default route domain. - Another Condition : TLS1.3 Monitor is used

Workaround

N/A

Fix Information

N/A

Change history

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

Affected versions:13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 13.1.3, 13.1.3.1, 13.1.3.2, 13.1.3.3, 13.1.3.4, 13.1.3.5, 13.1.3.6, 13.1.4, 13.1.4.1, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 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, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 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, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1

Fixed versions: 17.0.0, 16.1.2.2, 15.1.5.1, 14.1.4.6, 13.1.5

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 17.0.0, 16.1.2.2, 15.1.5.1, 14.1.4.6, 13.1.5

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F5 - Defect ID: 944121

Missing SNI information when using non-default domain https monitor running in TMM mode.

F5 - Defect ID: 944121

Missing SNI information when using non-default domain https monitor running in TMM mode.

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: 944121

Missing SNI information when using non-default domain https monitor running in TMM mode.

F5 - Defect ID: 944121

Missing SNI information when using non-default domain https monitor running in TMM mode.

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