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.
References (1)
Scores
CVSS v3
9.8
EPSS
0.0006
EPSS Percentile
18.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-288
Status
published
Products (1)
openairinterface/oai-cn5g-amf
2.2.0
Published
Apr 07, 2026
Tracked Since
Apr 07, 2026