CVE-2026-7779

MEDIUM

Open5GS authentication-subscription Endpoint nudr-handler.c udm_nudr_dr_handle_subscription_authentication denial of service

Title source: cna
STIX 2.1

Description

A security flaw has been discovered in Open5GS up to 2.7.7. Affected is the function udm_nudr_dr_handle_subscription_authentication of the file /src/udm/nudr-handler.c of the component authentication-subscription Endpoint. Performing a manipulation results in denial of service. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

References (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-360976 | Open5GS authentication-subscription Endpoint nudr-handler.c udm_nudr_dr_handle_subscription_authentication denial of service
https://vuldb.com/vuln/360976
Signature, Permissions Required signature permissions-required
VDB-360976 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/360976/cti
Third Party Advisory third-party-advisory
Submit #806249 | Open5gs UDM v2.7.7 Denial of Service
https://vuldb.com/submit/806249
Exploit exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4418

Scores

CVSS v3 4.3
EPSS 0.0036
EPSS Percentile 27.4%
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 04, 2026
Tracked Since May 05, 2026