CVE-2026-4531

medium

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

https://vuldb.com/?submit.774073

https://vuldb.com/?id.352319

https://vuldb.com/?ctiid.352319

https://github.com/free5gc/free5gc/issues/792

https://github.com/free5gc/free5gc/

https://github.com/free5gc/amf/pull/198

https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799

Details

Source: Mitre, NVD

Published: 2026-03-22

Updated: 2026-03-22

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.3

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

Severity: Medium

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00057