CVE-2026-44473CWE-358CWE-863

Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse

High · published May 27, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
18.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00269 · 18.1th percentile
Weaknesses
CWE-358 · Improperly Implemented Security Check for Standard; CWE-863 · Incorrect Authorization
Published
2026-05-27T15:16Z
EPSS history
Timeline
  • 27 MAY 15:16Z
    Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse
    cvelistv5