CVE-2026-40618 | F5 BIG-IP prior 17.1.3.1/17.1.5.4/21.0.0.1 Traffic Management Microkernel buffer size (K000158082)
A vulnerability was found in F5 BIG-IP, BIG-IP Next SPK, BIG-IP Next CNF and BIG-IP Next for Kubernetes. It has been rated as critical. This impacts an unknown function of the component Traffic Management Microkernel. This manipulation causes incorrect calculation of buffer size.
The identification of this vulnerability is CVE-2026-40618. It is possible to initiate the attack remotely. There is no exploit available.
Upgrading the affected component is advised.