What’s Vulnerable › Vulnerabilities

CVE-2026-5661: Free5GC NGSetupRequest denial of service

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-06 · updated 2026-06-17
• Weakness: CWE-404

Description

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.

Affected products

• free5gc: 4.2.0

References

• https://github.com/free5gc/amf/pull/201
• https://github.com/free5gc/free5gc/
• https://github.com/free5gc/free5gc/issues/832
• https://github.com/user-attachments/files/25581199/amfcfg.yaml
• https://vuldb.com/submit/785896
• https://vuldb.com/vuln/355485
• https://vuldb.com/vuln/355485/cti

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