Medium severity · published Oct 15, 2025
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:…
6.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BN
Big-ip Next Cloud-native Network Functions · F5
1.1.0 through 1.4.1 · source: NVD
BN
Big-ip Next For Kubernetes · F5
2.0.0 · source: NVD
BN
Big-ip Next Service Proxy For Kubernetes · F5
1.7.0 through 1.9.2 · source: NVD
Affected product
BN
Big-ip Next Cloud-native Network Functions
F5
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-55670
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-55670
Vendor Advisory
https://my.f5.com/manage/s/article/K000154614
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