CVE-2026-8251
Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of service
- State
- Published
- Severity
- 5.3 Medium
- Published
- May 10, 2026
- Updated
- May 11, 2026
- Reserved
- May 10, 2026
Description
A vulnerability was found in Open5GS up to 2.7.7. This impacts the function update_authorized_pcc_rule_and_qos of the file /src/smf/npcf-handler.c of the component SMF. Performing a manipulation results in denial of service. The attack is possible to be carried out remotely. The exploit has been made public and could 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-362548 | Open5GS SMF npcf-handler.c update_authorized_pcc_rule_and_qos denial of servicevdb-entrytechnical-description
- VDB-362548 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #808480 | Open5gs SMF v2.7.7 Denial of Servicethird-party-advisory
- https://github.com/open5gs/open5gs/issues/4445exploitissue-tracking
- https://github.com/open5gs/open5gs/product
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