BugZero | F5 BugID 474901 - Profiles with a large number of regexps can cause ...

F5 - Defect ID: 474901

Profiles with a large number of regexps can cause excessive memory usage.

F5 - Defect ID: 474901

Profiles with a large number of regexps can cause excessive memory usage.

Last updated on July 18th, 2026

BugZero Risk Score
6.0 Medium

Overall: 6.0

Severity: 6.4

Community: 4.2

Lifecycle: 8.3

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Bug Details

Priority: 4-Minor
Status: Verified
Impact Category: Local Traffic Manager

Description

Symptoms

tmm crashes on out of memory.

Impact

Traffic disrupted while tmm restarts.

Conditions

This can occur if you are using a lot of profiles that rely on regular expressions, such as compression or deflate.

Workaround

None

Fix Information

None

Change history

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

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, 12.0.0, 12.0.0 hf1, 12.0.0 hf2, 12.0.0 hf3, 12.0.0 hf4, 12.1.0, 12.1.0 hf1, 12.1.0 hf2, 12.1.1, 12.1.1 hf1, 12.1.1 hf2, 12.1.2, 12.1.2 hf1, 12.1.2 hf2, 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

Fixed versions: 13.1.0

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 13.1.0

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F5 - Defect ID: 474901

Profiles with a large number of regexps can cause excessive memory usage.

F5 - Defect ID: 474901

Profiles with a large number of regexps can cause excessive memory usage.

Last updated on July 18th, 2026

BugZero Risk Score6.0 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 474901

Profiles with a large number of regexps can cause excessive memory usage.

F5 - Defect ID: 474901

Profiles with a large number of regexps can cause excessive memory usage.

Last updated on July 18th, 2026

BugZero Risk Score6.0 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.0 Medium

BugZero Risk Score
6.0 Medium