CVE-2026-1973

Medium

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.

SeverityMedium

CVSS5.3

Exploit probability—

ProductFree5gc

PublishedFeb 6, 2026

First seenFeb 6, 2026

Weakness typeCWE-476NULL pointer dereference CWE-404CWE-404

How to fix

Patches

github.com/free5gc/smf/pull/189

Affected products

Product	Affected versions	Fixed in
free5gc free5gc	v ≤ 4.1.0	—

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