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Vulnerability record · CVE-2025-55670 · published 15 October 2025

CVE-2025-55670: F5 big-ip next cloud-native network functions allocation without limits vulnerability

F5 · Big Ip Next Cloud Native Network Functions

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.

7.1 CVSS 4.0 High EPSS 0.31% · top 79.1% CWE-770 · Allocation without limits
7.1CVSS 4.0 base score
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://my.f5.com/manage/s/article/K000154614 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-44487HTTP/2 Rapid Reset stream cancellation denial of serviceThe HTTP/2 protocol permits a client to cancel many streams quickly, and the server's handling of those resets consumes disproportionate resources. T…KEVEPSS 100%analysed8.7CVE-2026-59762F5 big-ip next cloud-native network functions allocation without limits vulnerabilityWhen an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.   Impact: System…EPSS 0.57%8.7CVE-2026-42409F5 big-ip next cloud-native network functions null pointer dereference vulnerabilityWhen an HTTP/2 profile and an iRule containing the HTTP::redirect or HTTP::respond command are configured on a virtual server, undisclosed requests c…EPSS 0.46%8.7CVE-2026-41956F5 big-ip access policy manager stack-based buffer overflow vulnerabilityWhen a classification profile is configured on a UDP virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to termi…EPSS 0.46%8.7CVE-2026-40618F5 big-ip access policy manager vulnerabilityWhen an SSL profile is configured on a virtual server on BIG-IP Virtual Edition (VE) without Intel QuickAssist Technology (QAT) or on BIG-IP hardware…EPSS 0.46%8.7CVE-2026-40629F5 big-ip access policy manager allocation without limits vulnerabilityWhen SSL profiles are configured on a virtual server, undisclosed traffic can cause the virtual server to stop processing new client connections.  No…EPSS 0.46%8.7CVE-2025-58071F5 big-ip access policy manager vulnerabilityWhen IPsec is configured on the BIG-IP system, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  Note: Software v…EPSS 0.37%8.7CVE-2025-61990F5 big-ip access policy manager double free vulnerabilityWhen using a multi-bladed platform with more than one blade, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  No…EPSS 0.35%

Source: NIST National Vulnerability Database (record CVE-2025-55670), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.