CVE-2026-8290

MEDIUM

Open5GS SMF nsmf-handler.c smf_nsmf_handle_update_data_in_vsmf denial of service

Title source: cna
STIX 2.1

Description

A security flaw has been discovered in Open5GS up to 2.7.7. This issue affects the function smf_nsmf_handle_update_data_in_vsmf of the file /src/smf/nsmf-handler.c of the component SMF. The manipulation results in denial of service. The attack can be executed remotely. 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-362587 | Open5GS SMF nsmf-handler.c smf_nsmf_handle_update_data_in_vsmf denial of service
https://vuldb.com/vuln/362587
Signature, Permissions Required signature permissions-required
VDB-362587 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/362587/cti
Third Party Advisory third-party-advisory
Submit #808507 | Open5gs SMF v2.7.7 Denial of Service
https://vuldb.com/submit/808507
Exploit exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4454

Scores

CVSS v3 4.3
EPSS 0.0037
EPSS Percentile 28.8%
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 11, 2026
Tracked Since May 11, 2026