CVE-2026-30075 — HIGH (7.5)

Vulnerability Description

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).

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Openairinterface	Oai-Cn5G-Amf	2.2.0

Related Weaknesses (CWE)

CWE-120

References

https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues/6ExploitIssue TrackingThird Party Advisory
https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZExploitIssue TrackingThird Party Advisory
https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-ausf/-/issues?show=eyJpaWQiOiI2IiwiZExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2026-30075?

CVE-2026-30075 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...

How severe is CVE-2026-30075?

CVE-2026-30075 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-30075?

Check the references section above for vendor advisories and patch information. Affected products include: Openairinterface Oai-Cn5G-Amf.