BIG-IP
CVE-2025-55670: BIG-IP Next (CNF, SPK, and Kubernetes) vulnerability
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.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityHIGHCVSS 4.0 7.1
EPSS0.31%Chance of exploitation in 30 days
Public exploitNot tracked
FixAvailable
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| BIG-IP Next SPK 2.0 | Not affected |
| BIG-IP Next SPK 1.7 | * or later |
| BIG-IP Next CNF 2.0 | Not affected |
| BIG-IP Next CNF 1.1 | * or later |
| BIG-IP Next for Kubernetes 2.0 | 2.1.0 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 12 Oct 2026.