CVE-2026-30079

CRITICAL
INFO Priority: 0.05 BB Relevance: 80/100
Published: 2026-04-07 Modified: 2026-11-11 First seen: 2026-11-11 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
openairinterface oai-cn5g-amf 2.2.0

References & Advisories (1)

https://gitlab.eurecom.fr/oai/cn5g/oai-cn5g-amf/-/issues/77
Exploit Issue Tracking Third Party Advisory

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.55%
Raw Score 0.005460
Percentile 46.3%
Date 2026-11-12

EPSS Trend

2026-11-12
0.00546
2026-11-10
0.00546

Intelligence Sources

nvd ref →