CVE-2026-44473

Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse

Published May 27, 2026 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-qfxw-v8qx-vj3v Ella Core Vulnerable to UE Downlink Redirection via Forged PDUSessionResourceSetupResponse
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Ellanetworks
Ellanetworks core
Vendors & Products Ellanetworks
Ellanetworks core
Type Values Removed Values Added
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.
Title Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse
Weaknesses CWE-358
CWE-863
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 28, 2026, 2:33 PM
Reserved
May 6, 2026, 5:18 PM
Status
Deferred
Published
May 27, 2026, 5:16 PM
Modified
Oct 26, 2026, 11:10 AM