---
id: CVE-2025-65561
title: >-
  An issue was discovered in function LocalNode.Sess in free5GC 4.1.0 allowing
  attackers to cause a denial of service or other unspecified impacts via
  crafted header Local SEID to the PFCP Session Modification Request.
summary: >-
  An issue was discovered in function LocalNode.Sess in free5GC 4.1.0 allowing
  attackers to cause a denial of service or other unspecified impacts via
  crafted header Local SEID to the PFCP Session Modification Request.
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-20
vendor: free5gc
product: free5gc
affected:
  - free5gc = 4.1.0
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-2025-65561'
references:
  - url: 'https://github.com/free5gc/free5gc/issues/730'
    label: cve@mitre.org
  - url: 'https://github.com/free5gc/go-upf/pull/80'
    label: cve@mitre.org
  - url: 'https://github.com/free5gc/free5gc/issues/730'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00439
epssPercentile: 0.3629
ingestedAt: '2026-10-13T11:23:51.137Z'
---

## Overview

An issue was discovered in function LocalNode.Sess in free5GC 4.1.0 allowing attackers to cause a denial of service or other unspecified impacts via crafted header Local SEID to the PFCP Session Modification Request.

## Affected

- `free5gc = 4.1.0`

## Remediation

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