CVE-2026-33907

Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing Authentication Response and Authentication Failure NAS message missing IEs. An attacker able to send crafted NAS messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required. Version 1.7.0 added IE presence verification to NAS message handling.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ellanetworks/core/commit/52962660e3bd3e23c7e96b0da270ac1e0e705273	Patch
https://github.com/ellanetworks/core/releases/tag/v1.7.0	Release Notes
https://github.com/ellanetworks/core/security/advisories/GHSA-55q8-2gwx-29pc	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:*

History

26 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Ella Core es un core 5G diseñado para redes privadas. Las versiones anteriores a la 1.7.0 entran en pánico al procesar mensajes NAS de Respuesta de autenticación y Fallo de autenticación a los que les faltan IEs. Un atacante capaz de enviar mensajes NAS manipulados a Ella Core puede hacer que el proceso colapse, causando una interrupción del servicio para todos los suscriptores conectados. No se requiere autenticación. La versión 1.7.0 añadió verificación de presencia de IEs al manejo de mensajes NAS.

Information

Published : 2026-03-27 21:17

Updated : 2026-10-26 22:10

NVD link : CVE-2026-33907

Mitre link : CVE-2026-33907

CVE.ORG link : CVE-2026-33907

JSON object : View

Products Affected

ellanetworks

ella_core

CWE

CWE-476

NULL Pointer Dereference

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