CVE-2026-1682
Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer dereference
- State
- Published
- Severity
- 6.9 Medium
- Published
- Jan 30, 2026
- Updated
- Feb 23, 2026
- Reserved
- Jan 30, 2026
Description
A flaw has been found in Free5GC SMF up to 4.1.0. Affected is the function HandlePfcpAssociationReleaseRequest of the file internal/pfcp/handler/handler.go of the component PFCP UDP Endpoint. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been published and may be used. A patch should be applied to remediate 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 |
|---|---|
SMFFree5GC |
|
References
- VDB-343475 | Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer dereferencevdb-entrytechnical-description
- VDB-343475 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #739508 | free5gc SMF v4.1.0 Denial of Servicethird-party-advisory
- https://github.com/free5gc/free5gc/issues/794issue-tracking
- https://github.com/free5gc/free5gc/issues/794#issuecomment-3761063382issue-tracking
- https://github.com/free5gc/free5gc/issues/794#issue-3811888505exploitissue-tracking
- https://github.com/free5gc/smf/pull/188issue-trackingpatch
- https://github.com/free5gc/smf/product
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