CVE-2026-33283

Ella Core is a 5G core designed for private networks. Versions prior to 1.6.0 panic when processing malformed UL NAS Transport NAS messages without a Request Type. 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 1.6.0 adds a guard when receiving an UL NAS Message without a Request Type given no SM Context.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/ellanetworks/core/security/advisories/GHSA-3366-gw57-fcm5	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

24 Mar 2026, 19:30

Type	Values Removed	Values Added
Summary		(es) Ella Core es un núcleo 5G diseñado para redes privadas. Versiones anteriores a la 1.6.0 entran en pánico al procesar mensajes NAS de transporte UL NAS malformados sin un Request Type. Un atacante capaz de enviar mensajes NAS manipulados a Ella Core puede bloquear el proceso, causando interrupción del servicio para todos los suscriptores conectados. No se requiere autenticación. La versión 1.6.0 añade una protección al recibir un Mensaje NAS UL sin un Request Type dado que no hay Contexto SM.
CPE		cpe:2.3:a:ellanetworks:ella_core::::::::
First Time		Ellanetworks Ellanetworks ella Core
References	~~() https://github.com/ellanetworks/core/security/advisories/GHSA-3366-gw57-fcm5 -~~	() https://github.com/ellanetworks/core/security/advisories/GHSA-3366-gw57-fcm5 - Vendor Advisory

24 Mar 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-24 00:16

Updated : 2026-06-17 10:37

NVD link : CVE-2026-33283

Mitre link : CVE-2026-33283

CVE.ORG link : CVE-2026-33283

JSON object : View

Products Affected

ellanetworks

ella_core

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2026-33283", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33283", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-24T14:12:37.211448Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/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": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "ellanetworks", "product": "core", "versions": [{"status": "affected", "version": "< 1.6.0"}]}]}], "published": "2026-03-24T00:16:30.530", "references": [{"url": "https://github.com/ellanetworks/core/security/advisories/GHSA-3366-gw57-fcm5", "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 1.6.0 panic when processing malformed UL NAS Transport NAS messages without a Request Type. 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 1.6.0 adds a guard when receiving an UL NAS Message without a Request Type given no SM Context."}, {"lang": "es", "value": "Ella Core es un n\u00facleo 5G dise\u00f1ado para redes privadas. Versiones anteriores a la 1.6.0 entran en p\u00e1nico al procesar mensajes NAS de transporte UL NAS malformados sin un Request Type. Un atacante capaz de enviar mensajes NAS manipulados a Ella Core puede bloquear el proceso, causando interrupci\u00f3n del servicio para todos los suscriptores conectados. No se requiere autenticaci\u00f3n. La versi\u00f3n 1.6.0 a\u00f1ade una protecci\u00f3n al recibir un Mensaje NAS UL sin un Request Type dado que no hay Contexto SM."}], "lastModified": "2026-06-17T10:37:14.780", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4A60BFD6-666C-4509-BE38-04CBFF557242", "versionEndExcluding": "1.6.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}