CVE-2026-8121
Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of service
- State
- Published
- Severity
- 5.3 Medium
- Published
- May 8, 2026
- Updated
- May 8, 2026
- Reserved
- May 7, 2026
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.
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-361908 | Open5GS NSSF conv.c ogs_sbi_parse_plmn_list denial of servicevdb-entrytechnical-description
- VDB-361908 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #808422 | Open5gs NSSF v2.7.7 Denial of Servicethird-party-advisory
- Submit #808424 | Open5gs NSSF v2.7.7 Denial of Service (Duplicate)third-party-advisory
- https://github.com/open5gs/open5gs/issues/4433exploitissue-tracking
- https://github.com/open5gs/open5gs/product
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