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Description

A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. It is best practice to apply a patch to resolve this issue.

PUBLISHED Reserved 2026-02-05 | Published 2026-02-06 | Updated 2026-02-06 | 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

Timeline

2026-02-05:Advisory disclosed
2026-02-05:VulDB entry created
2026-02-05:VulDB entry last update

Credits

ZiyuLin (VulDB User) reporter

References

vuldb.com/?id.344495 (VDB-344495 | Free5GC SMF establishPfcpSession null pointer dereference) vdb-entry technical-description

vuldb.com/?ctiid.344495 (VDB-344495 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.743236 (Submit #743236 | free5gc SMF v4.1.0 Denial of Service) third-party-advisory

github.com/free5gc/free5gc/issues/815 issue-tracking

github.com/free5gc/free5gc/issues/815 exploit issue-tracking

github.com/free5gc/smf/pull/189 issue-tracking patch

github.com/free5gc/free5gc/ product

cve.org (CVE-2026-1973)

nvd.nist.gov (CVE-2026-1973)

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