CVE-2025-55670: BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-15 · updated 2026-10-18
Weakness: CWE-770

Description

On BIG-IP Next CNF, BIG-IP Next SPK, and BIG-IP Next for Kubernetes systems, repeated undisclosed API calls can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

F5 BIG-IP Next CNF: from 1.1.0 through 1.4.1
F5 BIG-IP Next for Kubernetes: 2.0.0
F5 BIG-IP Next SPK: from 1.7.0 through 1.9.2

References

https://my.f5.com/manage/s/article/K000154614

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