BugZero | F5 BugID 685915 - Allow unsigned DNS notifies if a DNS express zone'...

F5 - Defect ID: 685915

Allow unsigned DNS notifies if a DNS express zone's target server has no TSIG key configured

F5 - Defect ID: 685915

Allow unsigned DNS notifies if a DNS express zone's target server has no TSIG key configured

Last updated on July 18th, 2026

BugZero Risk Score
8.4 High

Overall: 8.4

Severity: 9.1

Community: 4.2

Lifecycle: 7.0

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Bug Details

Priority: 2-Critical
Status: Verified
Impact Category: Global Traffic Manager (DNS)

Description

Symptoms

If a DNS Express zone that has Verify Notify TSIG checked gets a notify with no TSIG at all, unsigned notifies are not processed.

Impact

Unsigned notifies are not processed

Conditions

Unigned notify is received when Verify Notify TSIG is checked.

Workaround

There is no workaround at this time.

Fix Information

This fix corrects an issue in TSIG handling when combined with NOTIFY messages for zone transfers

Change history

Links

Original Vendor Announcement

Relevant Products

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Affected versions:12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 12.1.3.4, 12.1.3.5, 12.1.3.6, 12.1.3.7, 12.1.4, 12.1.4.1, 12.1.5, 12.1.5.1, 12.1.5.2, 12.1.5.3, 12.1.6, 13.0.0, 13.0.0 hf1, 13.0.0 hf2, 13.0.0 hf3, 13.0.1, 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, 13.1.5, 13.1.5.1

Fixed versions: 14.0.0

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 14.0.0

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F5 - Defect ID: 685915

Allow unsigned DNS notifies if a DNS express zone's target server has no TSIG key configured

F5 - Defect ID: 685915

Allow unsigned DNS notifies if a DNS express zone's target server has no TSIG key configured

Last updated on July 18th, 2026

BugZero Risk Score8.4 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 685915

Allow unsigned DNS notifies if a DNS express zone's target server has no TSIG key configured

F5 - Defect ID: 685915

Allow unsigned DNS notifies if a DNS express zone's target server has no TSIG key configured

Last updated on July 18th, 2026

BugZero Risk Score8.4 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
8.4 High

BugZero Risk Score
8.4 High