CVE-2026-8121

MEDIUM

Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of service

Title source: cna
STIX 2.1

Description

A vulnerability has been found in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_parse_plmn_list in the library /lib/sbi/conv.c of the component NSSF. The manipulation leads to denial of service. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-361908 | Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of service
https://vuldb.com/vuln/361908
Signature, Permissions Required signature permissions-required
VDB-361908 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/361908/cti
Third Party Advisory third-party-advisory
Submit #808422 | Open5gs NSSF v2.7.7 Denial of Service
https://vuldb.com/submit/808422
Third Party Advisory third-party-advisory
Submit #808424 | Open5gs NSSF v2.7.7 Denial of Service (Duplicate)
https://vuldb.com/submit/808424
Exploit exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4433

Scores

CVSS v3 4.3
EPSS 0.0038
EPSS Percentile 29.7%
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 (9)
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
open5gs/open5gs < 2.7.7
Published May 08, 2026
Tracked Since May 08, 2026