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.

Project Subscriptions

Vendors Products
Open5gs Subscribe
Open5gs Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 05 May 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sun, 03 May 2026 22:45:00 +0000

Type Values Removed Values Added
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.
Title Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service
First Time appeared Open5gs
Open5gs open5gs
Weaknesses CWE-404
CPEs cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*
Vendors & Products Open5gs
Open5gs open5gs
References
Metrics cvssV2_0

{'score': 4, 'vector': 'AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 4.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-05-05T19:56:53.348Z

Reserved: 2026-05-03T07:21:51.531Z

Link: CVE-2026-7707

cve-icon Vulnrichment

Updated: 2026-05-05T19:55:50.524Z

cve-icon NVD

Status : Deferred

Published: 2026-05-03T23:16:42.027

Modified: 2026-05-05T21:16:24.660

Link: CVE-2026-7707

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-04T00:00:13Z

Weaknesses