CVE-2026-1976
Free5GC SMF SessionDeletionResponse null pointer dereference
- State
- Published
- Severity
- 6.9 Medium
- Published
- Feb 6, 2026
- Updated
- Feb 23, 2026
- Reserved
- Feb 5, 2026
Description
A weakness has been identified in Free5GC up to 4.1.0. Affected is the function SessionDeletionResponse of the component SMF. This manipulation causes null pointer dereference. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. It is suggested to install a patch to address this issue.
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
Affected Products
| Product | Versions |
|---|---|
Free5GCn/a |
|
References
- VDB-344498 | Free5GC SMF SessionDeletionResponse null pointer dereferencevdb-entrytechnical-description
- VDB-344498 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #743239 | free5gc SMF v4.1.0 Denial of Servicethird-party-advisory
- https://github.com/free5gc/free5gc/issues/817issue-tracking
- https://github.com/free5gc/free5gc/issues/817#issue-3832188092exploitissue-tracking
- https://github.com/free5gc/smf/pull/189issue-trackingpatch
- https://github.com/free5gc/free5gc/product
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