CVE-2026-8728
Open5GS NRF conv.c ogs_sbi_discovery_option_parse_plmn_list denial of service
- State
- Published
- Severity
- 5.3 Medium
- Published
- May 17, 2026
- Updated
- May 18, 2026
- Reserved
- May 16, 2026
Description
A security vulnerability has been detected in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_discovery_option_parse_plmn_list in the library /lib/sbi/conv.c of the component NRF. Such manipulation of the argument target-plmn-list leads to denial of service. The attack can be executed remotely. The exploit has been disclosed publicly 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-364317 | Open5GS NRF conv.c ogs_sbi_discovery_option_parse_plmn_list denial of servicevdb-entrytechnical-description
- VDB-364317 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #808510 | Open5gs NRF v2.7.7 Denial of Servicethird-party-advisory
- Submit #808511 | Open5gs NRF v2.7.7 Denial of Service (Duplicate)third-party-advisory
- https://github.com/open5gs/open5gs/issues/4458exploitissue-tracking
- https://github.com/open5gs/open5gs/product
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