CVE-2026-30079 — CRITICAL (9.8)

Vulnerability Description

In OpenAirInterface V2.2.0 AMF, Out of sequence messages causes incorrect state transition during UE registration procedure. This allows authentication to be bypassed completely. If a SecurityModeComplete message is sent after InitialUERegistration, a registration reject is received followed by a registration accept! This leads the UE to be registered without proper authentication.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Openairinterface	Oai-Cn5G-Amf	2.2.0

Related Weaknesses (CWE)

CWE-288

References

https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-amf/-/issues/77ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2026-30079?

CVE-2026-30079 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In OpenAirInterface V2.2.0 AMF, Out of sequence messages causes incorrect state transition during UE registration procedure. This allows authentication to be bypassed completely. If a SecurityModeComp...

How severe is CVE-2026-30079?

CVE-2026-30079 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-30079?

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