---
id: CVE-2025-65566
title: >-
  A denial-of-service vulnerability exists in the omec-project UPF (pfcpiface
  component) in version upf-epc-pfcpiface:2.1.3-dev
summary: >-
  A denial-of-service vulnerability exists in the omec-project UPF (pfcpiface
  component) in version upf-epc-pfcpiface:2.1.3-dev. When the UPF receives a
  PFCP Session Report Response that is missing the mandatory Cause Information
  Element, …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-476
vendor: linuxfoundation
product: upf
affected:
  - upf = 2.1.3
published: '2025-12-18'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T11:10:00.203'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-65566'
references:
  - url: 'https://github.com/omec-project/upf/issues/958'
    label: cve@mitre.org
  - url: 'https://github.com/omec-project/upf/issues/958'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00338
epssPercentile: 0.25312
ingestedAt: '2026-10-13T11:23:51.139Z'
---

## Overview

A denial-of-service vulnerability exists in the omec-project UPF (pfcpiface component) in version upf-epc-pfcpiface:2.1.3-dev. When the UPF receives a PFCP Session Report Response that is missing the mandatory Cause Information Element, the session report handler dereferences a nil pointer instead of rejecting the malformed message. This triggers a panic and terminates the UPF process. An attacker who can send PFCP Session Report Response messages to the UPF's N4/PFCP endpoint can exploit this flaw to repeatedly crash the UPF and disrupt user-plane services.

## Affected

- `upf = 2.1.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.