---
id: CVE-2026-30075
title: >-
  OpenAirInterface Version 2.2.0 has a Buffer Overflow vulnerability in
  processing UplinkNASTransport containing Authentication Response containing a
  NAS PDU with oversize response (For example 100 byte)
summary: >-
  OpenAirInterface Version 2.2.0 has a Buffer Overflow vulnerability in
  processing UplinkNASTransport containing Authentication Response containing a
  NAS PDU with oversize response (For example 100 byte). The response is decoded
  by AMF and…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-120
vendor: openairinterface
product: oai-cn5g-amf
affected:
  - oai-cn5g-amf = 2.2.0
published: '2026-04-08'
updated: '2026-07-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-30075'
references:
  - url: 'https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues/6'
    label: cve@mitre.org
  - url: >-
      https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZnVsbF9wYXRoIjoib2FpL2NuNWcvb2FpLWNuNWctYXVzZiIsImlkIjo1NDE5fQ%3D%3D
    label: cve@mitre.org
  - url: >-
      https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZnVsbF9wYXRoIjoib2FpL2NuNWcvb2FpLWNuNWctYXVzZiIsImlkIjo1NDE5fQ%3D%3D
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00661
epssPercentile: 0.49429
ingestedAt: '2026-07-26T00:06:14.989Z'
---

## Overview

OpenAirInterface Version 2.2.0 has a Buffer Overflow vulnerability in processing UplinkNASTransport containing Authentication Response containing a NAS PDU with oversize response (For example 100 byte). The response is decoded by AMF and passed to the AUSF component for verification. AUSF crashes on receiving this oversize response. This can prohibit users from further registration and verification and can cause Denial of Services (DoS).

## Affected

- `oai-cn5g-amf = 2.2.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.