Last Modified: Aug 30, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
21.1.0, 21.1.0.1
Opened: Jul 27, 2026 Severity: 2-Critical
When BIG-IP handles HTTP/2 traffic, it performs calculations that can result in a SIGFPE (floating-point exception), crashing TMM
TMM crashes and restarts, causing a temporary disruption of traffic processing and failover. Connections are reset
- Virtual has http2 - DB variable Tmm.HTTP2.EnableStreamPriority is set to True - HTTP/2 traffic is being handled by the virtual
Disable HTTP/2 Extensible Priorities by setting Tmm.HTTP2.EnableStreamPriority to False
None