CVE-2026-8250
Open5GS SMF n4-build.c smf_n4_build_qos_flow_to_modify_list denial of service
- State
- Published
- Severity
- 5.3 Medium
- Published
- May 10, 2026
- Updated
- May 11, 2026
- Reserved
- May 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS: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 | VulDB |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 4.3 Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 4.0 Medium | AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-404 Denial of Service
Affected Products
| Product | Versions |
|---|---|
Open5GSn/a |
|
References
- VDB-362547 | Open5GS SMF n4-build.c smf_n4_build_qos_flow_to_modify_list denial of servicevdb-entrytechnical-description
- VDB-362547 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #808476 | Open5gs SMF v2.7.7 Denial of Servicethird-party-advisory
- https://github.com/open5gs/open5gs/issues/4444exploitissue-tracking
- https://github.com/open5gs/open5gs/product
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