What is CVE-2025-55670?

CVE-2025-55670 is a medium-severity vulnerability in F5 Big-ip Next Cnf, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2025-10-15.

How severe is CVE-2025-55670?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in F5 Big-ip Next Cnf

CVE-2025-55670

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 Suppo…

EPSS: 0.001 (24.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

F5 Big-ip Next Cnf — versions 2.0.0, 1.1.0
F5 Big-ip Next For Kubernetes — versions 2.0.0
F5 Big-ip Next Spk — versions 2.0.0, 1.7.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

my.f5.com/manage/s/article/K000154614 (vendor-advisory)

Frequently asked questions

What is CVE-2025-55670?: CVE-2025-55670 is a medium-severity vulnerability in F5 Big-ip Next Cnf, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2025-10-15.
How severe is CVE-2025-55670?: Medium severity. CVSS v3 base score is 6.5 out of 10.