Unrated severityNVD Advisory· Published Feb 6, 2026· Updated Feb 23, 2026

Free5GC SMF SessionDeletionResponse null pointer dereference

CVE-2026-1976

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.

Affected products

Free5gc/Free5gcv52 versions
cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*range: 4.0
- (no CPE)range: <=4.1.0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/free5gc/smf/pull/189mitreissue-trackingpatch
github.com/free5gc/free5gc/issues/817mitreexploitissue-tracking
vuldb.commitrethird-party-advisory
github.com/free5gc/free5gc/issues/817mitreissue-tracking
vuldb.commitresignaturepermissions-required
vuldb.commitrevdb-entrytechnical-description

News mentions

No linked articles in our index yet.

cvss	0.000
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000