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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.

PUBLISHED Reserved 2026-01-30 | Published 2026-01-30 | Updated 2026-02-23 | Assigner VulDB




MEDIUM: 6.9CVSS: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
MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
MEDIUM: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
5.0AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C

Problem types

NULL Pointer Dereference

Denial of Service

Product status

4.0
affected

4.1.0
affected

Timeline

2026-01-30:Advisory disclosed
2026-01-30:VulDB entry created
2026-02-17:VulDB entry last update

Credits

ZiyuLin (VulDB User) reporter

References

vuldb.com/?id.343475 (VDB-343475 | Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer dereference) vdb-entry technical-description

vuldb.com/?ctiid.343475 (VDB-343475 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.739508 (Submit #739508 | free5gc SMF v4.1.0 Denial of Service) third-party-advisory

github.com/free5gc/free5gc/issues/794 issue-tracking

github.com/free5gc/free5gc/issues/794 issue-tracking

github.com/free5gc/free5gc/issues/794 exploit issue-tracking

github.com/free5gc/smf/pull/188 issue-tracking patch

github.com/free5gc/smf/ product

cve.org (CVE-2026-1682)

nvd.nist.gov (CVE-2026-1682)

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