CVE-2026-1587
Open5GS SGWC s11-handler.c sgwc_s11_handle_modify_bearer_request denial of service
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jan 29, 2026
- Updated
- Feb 23, 2026
- Reserved
- Jan 29, 2026
Description
A vulnerability has been found in Open5GS up to 2.7.6. The affected element is the function sgwc_s11_handle_modify_bearer_request of the file /sgwc/s11-handler.c of the component SGWC. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. Applying a patch is the recommended action to fix this issue. The issue report is flagged as already-fixed.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 3.0 | 5.3 Medium | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 5.0 Medium | AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
- CWE-404 Denial of Service
Affected Products
| Product | Versions |
|---|---|
Open5GSn/a |
|
References
- VDB-343350 | Open5GS SGWC s11-handler.c sgwc_s11_handle_modify_bearer_request denial of servicevdb-entrytechnical-description
- VDB-343350 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #738376 | Open5GS SGWC v2.7.6 Denial of Servicethird-party-advisory
- https://github.com/open5gs/open5gs/issues/4272issue-tracking
- https://github.com/open5gs/open5gs/issues/4272#event-21968635948issue-tracking
- https://github.com/open5gs/open5gs/issues/4272#issue-3795156752exploitissue-tracking
- https://github.com/open5gs/open5gs/product
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