CVE-2026-44473

Ella Core: UE Downlink Redirection via Forged PDUSessionResourceSetupResponse

State: Published
Severity: 7.1 High
Published: May 27, 2026
Updated: May 28, 2026
Reserved: May 6, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H	GitHub_M

Weaknesses

CWE-358 Improperly Implemented Security Check for Standard
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
coreellanetworks	< 1.10.0Affected

References

https://github.com/ellanetworks/core/security/advisories/GHSA-qfxw-v8qx-vj3v

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