CVE-2026-1976: FREE5GC

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

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 FREE5GC: up to and including 4.1.0

Published 2026-02-06. Last modified 2026-06-17.