CVE-2025-54479: F5 BIG-IP Next Cloud-Native Network Functions

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

When a classification profile is configured on a virtual server without an HTTP or HTTP/2 profile, undisclosed requests 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

• F5 BIG-IP Next Cloud-Native Network Functions: from 1.1.0, up to and including 1.4.0; version 2.0.0 only; version 2.0.1 only; version 2.0.2 only; version 2.1.0 only
• F5 BIG-IP Next For Kubernetes: version 2.0.0 only; version 2.1.0 only
• F5 BIG-IP Policy Enforcement Manager: from 15.1.0, before 15.1.10.8 (fixed in 15.1.10.8); from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only

Published 2025-10-15. Last modified 2026-06-17.