An issue in the NGAP handler of free5gc v4.0.1 allows attackers to cause a Denial of Service (DoS) via a crafted NAS PDU. (CVE-2026-30062)
Description
A vulnerability in the NGAP handler of free5gc version 4.0.1 allows an attacker to cause a Denial of Service (DoS) by sending a crafted NAS PDU. This issue does not impact confidentiality or integrity but results in service disruption.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The NGAP handler component in free5gc v4.0.1 contains a flaw that can be triggered by a specially crafted NAS PDU, leading to a Denial of Service condition. The vulnerability is identified as CWE-770, indicating an allocation of resources without limits or throttling, which can be exploited to exhaust resources and disrupt service availability. The CVSS v3.1 score is 7.5 (high severity) with network attack vector, low attack complexity, no privileges required, no user interaction, and impact limited to availability.
Potential Impact
Successful exploitation causes a Denial of Service, impacting the availability of the affected free5gc service. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
No patch or official remediation has been provided or linked in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider limiting exposure of the affected service to untrusted networks and monitor for anomalous NAS PDU traffic patterns if possible.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7856-4x95-7945
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-30062"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a91a872acd9273b49069c12
Added to database: 08/28/2026, 15:25:38 UTC
Last enriched: 09/08/2026, 04:22:43 UTC
Last updated: 10/12/2026, 06:48:16 UTC
Views: 51
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