TI-2026-04968 Aliases CVE-2026-5661 GHSA-jjpc-rhf2-47c4

Free5GC NGSetupRequest denial of service

HIGH 70CWE-404Published 2026-04-06 · Updated 2026-04-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-404.

Summary

A vulnerability was identified in Free5GC 4.2.0. This affects an unknown function of the component NGSetupRequest Handler. Such manipulation leads to denial of service. The attack may be launched remotely. The exploit is publicly available and might be used.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00435 37th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	Free5GC	4.2.0	—	No fix listed	CNA

Free5GC Vendor— Affected 4.2.0 Fixed in — No fix listed CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:free5gc:free5gc::::::::	—	—	free5gc

cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:* Versions — — ·free5gc

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-5661
2026-10-03 Alias added: GHSA-jjpc-rhf2-47c4
2026-10-25 EPSS moved to the below the 50th percentile

References

Exploit 1

https://github.com/user-attachments/files/25581199/amfcfg.yaml

Patch 1

https://github.com/free5gc/amf/pull/201

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences