---
id: CVE-2026-8249
title: A flaw has been found in Open5GS up to 2.7.7
summary: >-
  A flaw has been found in Open5GS up to 2.7.7. The impacted element is the
  function update_authorized_pcc_rule_and_qos of the file
  /src/smf/npcf-handler.c of the component SMF. This manipulation causes denial
  of service. Remote exploitati…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-404
vendor: open5gs
product: open5gs
affected:
  - open5gs <= 2.7.7
published: '2026-05-10'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-8249'
references:
  - url: 'https://github.com/open5gs/open5gs/'
    label: cna@vuldb.com
  - url: 'https://github.com/open5gs/open5gs/issues/4443'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/808473'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/362546'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/362546/cti'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/808473'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00676
epssPercentile: 0.50076
ingestedAt: '2026-07-24T07:21:21.563Z'
---

## Overview

A flaw has been found in Open5GS up to 2.7.7. The impacted element is the function update_authorized_pcc_rule_and_qos of the file /src/smf/npcf-handler.c of the component SMF. This manipulation causes denial of service. Remote exploitation of the attack is possible. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## Affected

- `open5gs <= 2.7.7`

## Remediation

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