PT-2026-39667 · Ellanetworks+1 · Core+1

Sjna0414 · Published 2026-05-11 · Updated 2026-05-27 · CVE-2026-44473

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Ella Core versions prior to 1.10.0

Description A radio with a valid NG Setup can send a forged 'PDUSessionResourceSetupResponse' carrying any UE's AMF-UE-NGAP-ID. The software fails to verify if the message arrived on the SCTP association bound to the logical NG-connection of that UE, subsequently creating a GTP tunnel towards the radio. This results in the redirection of downlink user-plane traffic for the targeted UE to the attacker's radio.

Recommendations Update to version 1.10.0.

Fix

Incorrect Authorization

Improperly Implemented Security Check for Standard

Weakness Enumeration

CWE-863

CWE-358

Related Identifiers

CVE-2026-44473

GHSA-QFXW-V8QX-VJ3V

Affected Products

Core

Github.Com/Ellanetworks/Core

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-44473 · Security Note
• https://osv.dev/vulnerability/GHSA-qfxw-v8qx-vj3v · Vendor Advisory
• https://github.com/ellanetworks/core/security/advisories/GHSA-qfxw-v8qx-vj3v · Note
• https://github.com/ellanetworks/core · Note
• https://reddit.com/r/VulnMatter/comments/1ta7ffo/resumen_diario_de_vulnerabilidades_11052026 · Reddit Post