CVE-2026-33903

Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing a specially crafted NGAP LocationReport message. An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers. Version 1.7.0 adds guards in NGAP Location Report handler.

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/ec77a2ad4508f8488cb356fd45b2f1efd92587f8	Patch
https://github.com/ellanetworks/core/releases/tag/v1.7.0	Release Notes
https://github.com/ellanetworks/core/security/advisories/GHSA-f2f3-9cx3-wcmf	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Ella Core es un núcleo 5G diseñado para redes privadas. Las versiones anteriores a la 1.7.0 entran en pánico al procesar un mensaje NGAP LocationReport especialmente manipulado. Un atacante capaz de enviar mensajes NGAP manipulados a Ella Core puede provocar la caída del proceso, causando una interrupción del servicio para todos los suscriptores conectados. La versión 1.7.0 añade protecciones en el gestor de informes de ubicación NGAP.

Information

Published : 2026-03-27 21:17

Updated : 2026-10-26 21:10

NVD link : CVE-2026-33903

Mitre link : CVE-2026-33903

CVE.ORG link : CVE-2026-33903

JSON object : View

Products Affected

ellanetworks

ella_core

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2026-33903", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33903", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-30T15:42:19.338459Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "ADJACENT_NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "ellanetworks", "product": "core", "versions": [{"status": "affected", "version": "< 1.7.0"}]}]}], "published": "2026-03-27T21:17:26.477", "references": [{"url": "https://github.com/ellanetworks/core/commit/ec77a2ad4508f8488cb356fd45b2f1efd92587f8", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/ellanetworks/core/releases/tag/v1.7.0", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/ellanetworks/core/security/advisories/GHSA-f2f3-9cx3-wcmf", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing a specially crafted NGAP LocationReport message. An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers. Version 1.7.0 adds guards in NGAP Location Report handler."}, {"lang": "es", "value": "Ella Core es un n\u00facleo 5G dise\u00f1ado para redes privadas. Las versiones anteriores a la 1.7.0 entran en p\u00e1nico al procesar un mensaje NGAP LocationReport especialmente manipulado. Un atacante capaz de enviar mensajes NGAP manipulados a Ella Core puede provocar la ca\u00edda del proceso, causando una interrupci\u00f3n del servicio para todos los suscriptores conectados. La versi\u00f3n 1.7.0 a\u00f1ade protecciones en el gestor de informes de ubicaci\u00f3n NGAP."}], "lastModified": "2026-10-26T21:10:00.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9BAD1DBD-ED4B-49AB-A563-C4838F8F8979", "versionEndExcluding": "1.7.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}