BugZero | F5 BugID 851341 - DNS cache responds with records exceeding cache-ma...

F5 - Defect ID: 851341

DNS cache responds with records exceeding cache-maximum-ttl for multiple TMMs

F5 - Defect ID: 851341

DNS cache responds with records exceeding cache-maximum-ttl for multiple TMMs

Last updated on July 18th, 2026

BugZero Risk Score
7.0 High

Overall: 7.0

Severity: 7.3

Community: 4.2

Lifecycle: 10.0

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Bug Details

Priority: 3-Major
Status: Resolved
Impact Category: Global Traffic Manager (DNS)

Description

Symptoms

DNS cache respond with records exceeding cache-maximum-ttl.

Impact

DNS cache responds with records exceeding cache-maximum-ttl for multiple TMMs, but not with single TMMs. Inconsistent behavior might lead to confusion.

Conditions

1. Multiple TMMs compared with single TMM. 2. Reassembled DNS response from previous cached records.

Workaround

None.

Fix Information

None

Change history

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

Affected versions: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, 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, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6

Fixed versions: No known fixed versions

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: No known fixed versions

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F5 - Defect ID: 851341

DNS cache responds with records exceeding cache-maximum-ttl for multiple TMMs

F5 - Defect ID: 851341

DNS cache responds with records exceeding cache-maximum-ttl for multiple TMMs

Last updated on July 18th, 2026

BugZero Risk Score7.0 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 851341

DNS cache responds with records exceeding cache-maximum-ttl for multiple TMMs

F5 - Defect ID: 851341

DNS cache responds with records exceeding cache-maximum-ttl for multiple TMMs

Last updated on July 18th, 2026

BugZero Risk Score7.0 High

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
7.0 High

BugZero Risk Score
7.0 High