CVE-2026-44473 HIGH

CVE-2026-44473: Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse

Vendor Ellanetworks
Product core
Weakness CWE-358
Published May 27, 2026
Last update May 28, 2026
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Ella Core is a 5G core designed for private networks. Prior to 1.10.0, a radio with a valid NG Setup can send a forged PDUSessionResourceSetupResponse carrying any UE's AMF-UE-NGAP-ID. Ella Core does not verify the message arrived on the SCTP association bound to that UE's logical NG-connection, then creates a GTP tunnel towards that radio. This vulnerability is fixed in 1.10.0.

Key dates

02Disclosure timeline

May 27, 2026 CVE published
May 28, 2026 Record updated