Vulnerability · Published Oct 15, 2025 · Assigned by f5
CVE-2025-55670BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability
Medium 6.5
In plain English
A medium-severity resource allocation without limits in BIG-IP Next CNF from F5. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.3%top 75.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| F5 | BIG-IP Next SPK | 1.7.0 – before * |
| F5 | BIG-IP Next CNF | 1.1.0 – before * |
| F5 | BIG-IP Next for Kubernetes | 2.0.0 – before 2.1.0 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- https://my.f5.com/manage/s/article/K000154614 vendor-advisory