Denial of Service in Open5GS UDR Component

Publication date: 2026-05-03

Last updated on: 2026-05-05

Assigner: VulDB

Description

A vulnerability was found in Open5GS up to 2.7.7. Impacted is the function udr_nudr_dr_handle_subscription_context of the file /src/udr/nudr-handler.c of the component UDR. The manipulation of the argument pei results in denial of service. The attack can be launched remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS Scores

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Meta Information

Published

2026-05-03

Last Modified

2026-05-05

Generated

2026-07-06

AI Q&A

2026-05-04

EPSS Evaluated

2026-07-05

NVD

CVE-2026-7707

Affected Vendors & Products

Vendor	Product	Version / Range
open5gs	open5gs	to 2.7.7 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-404	The product does not release or incorrectly releases a resource before it is made available for re-use.

Attack-Flow Graph

Executive Summary

This vulnerability exists in Open5GS up to version 2.7.7, specifically in the function udr_nudr_dr_handle_subscription_context within the UDR component. The issue arises from the manipulation of the argument 'pei', which can lead to a denial of service condition. The attack exploiting this vulnerability can be launched remotely.

Impact Analysis

The primary impact of this vulnerability is a denial of service, which means an attacker could disrupt the normal operation of the affected Open5GS component remotely. This could lead to service outages or degraded performance in systems relying on Open5GS.

Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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