CVE-2025-61974: F5 BIG-IP Next Cloud-Native Network Functions

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

When a client SSL profile is configured on a virtual server, undisclosed requests can cause an increase in 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; from 2.0.0, up to and including 2.1.0
• F5 BIG-IP Next For Kubernetes: version 2.0.0 only; version 2.1.0 only
• F5 BIG-IP Next Service Proxy For Kubernetes: from 1.7.0, up to and including 1.9.2; from 2.0.0, up to and including 2.0.2

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