CVE-2026-2521
Open5GS SGW-C sgwc_s5c_handle_create_session_response memory corruption
- State
- Published
- Severity
- 6.9 Medium
- Published
- Feb 15, 2026
- Updated
- Feb 23, 2026
- Reserved
- Feb 15, 2026
Description
A weakness has been identified in Open5GS up to 2.7.6. This issue affects the function sgwc_s5c_handle_create_session_response of the component SGW-C. Executing a manipulation can lead to memory corruption. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
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:X/RC:R | 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:X/RC:R | VulDB |
| 2.0 | 5.0 Medium | AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-119 Memory Corruption
Affected Products
| Product | Versions |
|---|---|
Open5GSn/a |
|
References
- VDB-346109 | Open5GS SGW-C sgwc_s5c_handle_create_session_response memory corruptionvdb-entrytechnical-description
- VDB-346109 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #738334 | Open5GS SGWC v2.7.6 Buffer Overflowthird-party-advisory
- https://github.com/open5gs/open5gs/issues/4282issue-tracking
- https://github.com/open5gs/open5gs/issues/4282#issue-3807902188exploitissue-tracking
- https://github.com/open5gs/open5gs/product
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