CVE-2026-7707

MEDIUM

Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service

Title source: cna
STIX 2.1

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.

References (7)

Core 7
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-360883 | Open5GS UDR nudr-handler.c udr_nudr_dr_handle_subscription_context denial of service
https://vuldb.com/vuln/360883
Signature, Permissions Required signature permissions-required
VDB-360883 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/360883/cti
Third Party Advisory third-party-advisory
Submit #805699 | Open5gs UDR v2.7.7 Denial of Service
https://vuldb.com/submit/805699
Third Party Advisory third-party-advisory
Submit #805700 | Open5gs UDR v2.7.7 Denial of Service (Duplicate)
https://vuldb.com/submit/805700
Issue Tracking issue-tracking
https://github.com/open5gs/open5gs/issues/4410
Exploit exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4411

Scores

CVSS v3 4.3
EPSS 0.0006
EPSS Percentile 17.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-404
Status published
Products (8)
None/Open5GS 2.7.0
None/Open5GS 2.7.1
None/Open5GS 2.7.2
None/Open5GS 2.7.3
None/Open5GS 2.7.4
None/Open5GS 2.7.5
None/Open5GS 2.7.6
None/Open5GS 2.7.7
Published May 03, 2026
Tracked Since May 04, 2026