CVE-2026-4531

MEDIUM

Free5GC AMF handler.go HandleRegistrationComplete denial of service

Title source: cna

Description

A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.

References (7)

[Vdb Entry, Technical Description] https://vuldb.com/?id.352319

[Signature, Permissions Required] https://vuldb.com/?ctiid.352319

[Third Party Advisory] https://vuldb.com/?submit.774073

[Issue Tracking] https://github.com/free5gc/free5gc/issues/792

[Patch] https://github.com/free5gc/amf/pull/198

[Patch] https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799

View Patch ZIP pw:eip

[Product] https://github.com/free5gc/free5gc/

Scores

CVSS v3 5.3

EPSS 0.0008

EPSS Percentile 24.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Details

CWE

CWE-404

Status published

Products (2)

free5gc/amf 0 - 1.4.3-0.20260306074636-52e9386401ceGo

n/a/Free5GC 4.1.0

Published Mar 22, 2026

Tracked Since Mar 22, 2026