BugZero | F5 BugID 1034365 - DTLS handshake fails with DTLS1.2 client version

F5 - Defect ID: 1034365

DTLS handshake fails with DTLS1.2 client version

F5 - Defect ID: 1034365

DTLS handshake fails with DTLS1.2 client version

Last updated on July 18th, 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

DTLS handshake will be unsuccessful when client initiates a handshake with BIG-IP with DTLS1.2 version

Impact

DTLS handshakes can fail.

Conditions

When there is a DTLS client which supports both DTLS 1.0 and DTLS 1.2, then this problem could occur.

Workaround

If possible, force the client to use only DTLS 1.0 in the client hello negotiation.

Fix Information

None

Change history

Links

Original Vendor Announcement

Relevant Products

Click on a version to see all relevant bugs

Affected versions: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, 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

Fixed versions: 15.1.5, 14.1.4.5, 13.1.5

Relevant Products

Click on a version to see all relevant bugs

Fixed versions: 15.1.5, 14.1.4.5, 13.1.5

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F5 - Defect ID: 1034365

DTLS handshake fails with DTLS1.2 client version

F5 - Defect ID: 1034365

DTLS handshake fails with DTLS1.2 client version

Last updated on July 18th, 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: 1034365

DTLS handshake fails with DTLS1.2 client version

F5 - Defect ID: 1034365

DTLS handshake fails with DTLS1.2 client version

Last updated on July 18th, 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