CVE-2025-65565: Opennetworking Upf

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

A denial-of-service vulnerability exists in the omec-project UPF (pfcpiface component) in version upf-epc-pfcpiface:2.1.3-dev. After PFCP association is established, a PFCP Session Establishment Request that is missing the mandatory F-SEID (CPF-SEID) Information Element is not properly validated. The session establishment handler calls IE.FSEID() on a nil pointer, which triggers a panic and terminates the UPF process. An attacker who can send PFCP Session Establishment Request messages to the UPF's N4/PFCP endpoint can exploit this issue to repeatedly crash the UPF and disrupt user-plane services.

Affected products

• Opennetworking Upf: version 2.1.3 only

Published 2025-12-18. Last modified 2026-06-17.