CVE-2026-8120 | THREATINT

Description

A flaw has been found in Open5GS up to 2.7.7. The affected element is the function nssf_nnrf_nsselection_handle_get_from_amf_or_vnssf of the file /src/nssf/nnssf-handler.c of the component NSSF. Executing a manipulation can lead to denial of service. The attack can be executed remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

PUBLISHED Reserved 2026-05-07 | Published 2026-05-08 | Updated 2026-05-08 | Assigner VulDB

MEDIUM: 5.3CVSS: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

MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

MEDIUM: 4.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

4.0AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

Denial of Service

Timeline

2026-05-07:	Advisory disclosed
2026-05-07:	VulDB entry created
2026-05-07:	VulDB entry last update

Credits

FrankyLin (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/submit/808421 exploit

vuldb.com/vuln/361907 (VDB-361907 | Open5GS NSSF nnssf-handler.c denial of service) vdb-entry technical-description

vuldb.com/vuln/361907/cti (VDB-361907 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/808421 (Submit #808421 | Open5gs NSSF v2.7.7 Denial of Service) third-party-advisory

github.com/open5gs/open5gs/issues/4432 exploit issue-tracking

github.com/open5gs/open5gs/ product

cve.org (CVE-2026-8120)

nvd.nist.gov (CVE-2026-8120)

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