Last Modified: Jul 29, 2026
Affected Product(s):
BIG-IP TMOS
Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 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, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 17.5.1.8, 21.0.0, 21.0.0.1, 21.0.0.2, 21.0.0.3, 21.1.0, 21.1.0.1
Opened: Mar 05, 2026 Severity: 3-Major
SSL handshake failure occurs with "Connection error: ssl_hs_rx:5756: alert(10) unexpected msg" found in /var/log/ltm
- Service is disrupted because of a handshake failure.
- Server SSL profile is enabled with the Session Ticket feature - Backend server also supports Session Ticket - Backend server rejects the Session Ticket sent by the BIG-IP
Disable the Session Ticket feature on the Server SSL Profile or the backend server.
None