CVE-2025-54805: F5 BIG-IP Next Cloud-Native Network Functions

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

When an iRule is configured on a virtual server via the declarative API, upon re-instantiation, the cleanup process can cause an increase in the Traffic Management Microkernel (TMM) memory resource utilization.  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 1.4.1
• F5 BIG-IP Next For Kubernetes: version 2.0.0 only
• F5 BIG-IP Next Service Proxy For Kubernetes: from 1.7.0, up to and including 1.9.2

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