BugZero | F5 BugID 1600853 - Attempting to create a CSR SSL certificate with ke...

F5 - Defect ID: 1600853

Attempting to create a CSR SSL certificate with key usage specified and a wildcard hostname fails with an error

F5 - Defect ID: 1600853

Attempting to create a CSR SSL certificate with key usage specified and a wildcard hostname fails with an error

Last updated on July 28th, 2026

BugZero Risk Score
6.7 Medium

Overall: 6.7

Severity: 7.3

Community: 4.2

Lifecycle: 7.0

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Bug Details

Priority: 3-Major
Status: Verified
Impact Category: Local Traffic Manager

Description

Symptoms

The creation of the certificate fails with "Following fields contains invalid characters: Common Name" or whatever field had the wildcard character in it.

Impact

Certificate creation fails.

Conditions

-- Creating a certificate via the BIG-IP GUI -- keyUsage and Basic Constraints fields are not empty

Workaround

Use TMSH to create CSR

Fix Information

Remove the check for bad shell characters

Change history

Links

Original Vendor Announcement

Relevant Products

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Affected versions:16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.1.3.1, 17.1.3.2, 17.1.3.4

Fixed versions: 17.5.0

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 17.5.0

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F5 - Defect ID: 1600853

Attempting to create a CSR SSL certificate with key usage specified and a wildcard hostname fails with an error

F5 - Defect ID: 1600853

Attempting to create a CSR SSL certificate with key usage specified and a wildcard hostname fails with an error

Last updated on July 28th, 2026

BugZero Risk Score6.7 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

F5 - Defect ID: 1600853

Attempting to create a CSR SSL certificate with key usage specified and a wildcard hostname fails with an error

F5 - Defect ID: 1600853

Attempting to create a CSR SSL certificate with key usage specified and a wildcard hostname fails with an error

Last updated on July 28th, 2026

BugZero Risk Score6.7 Medium

Bug Details

Symptoms

Impact

Conditions

Workaround

Fix Information

Links

Top F5 Defects

Ready to prevent the next vendor outage?

BugZero Risk Score
6.7 Medium

BugZero Risk Score
6.7 Medium