CVE-2026-44473

HIGH

Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.1
EPSS 0.0017
EPSS Percentile 6.1%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-358 CWE-863
Status published
Products (2)
ellanetworks/core 0 - 1.10.0Go
ellanetworks/core < 1.10.0
Published May 27, 2026
Tracked Since May 27, 2026