Last Modified: Jul 28, 2026
Affected Product(s):
BIG-IP DNS, GTM, Link Controller
Known Affected Versions:
17.5.1.3, 17.5.1.4, 17.5.1.5, 17.5.1.6, 17.5.1.8
Fixed In:
17.1.3.4
Opened: Jan 07, 2026 Severity: 3-Major
Big3d is consuming high CPU
Big3d is overloaded with high CPU usage
Network disruption
None
Some SSL sessions were being cached before a full and valid handshake was completed Issue in the SSL session cache lookup logic; the cache comparison did not fully validate that the session SNI matched the incoming connection During network-impact scenarios, monitor queues could already be full, and the system will no longer perform route checks that are not actionable because probes would be dropped