CVE-2026-8250

MEDIUM

Open5GS SMF n4-build.c smf_n4_build_qos_flow_to_modify_list denial of service

Title source: cna
STIX 2.1

Description

A vulnerability has been found in Open5GS up to 2.7.7. This affects the function smf_n4_build_qos_flow_to_modify_list of the file /src/smf/n4-build.c of the component SMF. Such manipulation leads to denial of service. The attack can be executed 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 (5)

Core 5
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-362547 | Open5GS SMF n4-build.c smf_n4_build_qos_flow_to_modify_list denial of service
https://vuldb.com/vuln/362547
Signature, Permissions Required signature permissions-required
VDB-362547 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/362547/cti
Third Party Advisory third-party-advisory
Submit #808476 | Open5gs SMF v2.7.7 Denial of Service
https://vuldb.com/submit/808476
Exploit exploit issue-tracking
https://github.com/open5gs/open5gs/issues/4444

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 10, 2026
Tracked Since May 11, 2026