CVE-2026-30075: Buffer Overflow
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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
OpenAirInterfaceto a version that resolves this vulnerability.Fixed in 2.2.0 - Compensating control
Mitigate the AUSF crash/DoS by blocking or rate-limiting UplinkNASTransport messages that contain an Authentication Response with a NAS PDU response size similar to the oversize example (e.g., ~100 bytes) until a fixed OpenAirInterface version is applied.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-30075?
CVE-2026-30075 is categorized as a high severity vulnerability due to its potential to cause crashes and disruptions in the AUSF component.
How do I fix CVE-2026-30075?
To fix CVE-2026-30075, update OpenAirInterface to a fixed version that addresses the buffer overflow issue.
What components are affected by CVE-2026-30075?
The affected components include the AMF and AUSF in OpenAirInterface version 2.2.0.
What types of attacks can exploit CVE-2026-30075?
Exploitation of CVE-2026-30075 can lead to Denial of Service attacks due to the crashing of the AUSF component.
How can I identify if CVE-2026-30075 is affecting my system?
You can identify if CVE-2026-30075 is affecting your system by checking the version of OpenAirInterface you are using and monitoring for crashes in the AUSF component.