CVE-2026-33907

{
  "id": "CVE-2026-33907",
  "sourceIdentifier": "[email protected]",
  "published": "2026-03-27T21:17:27.003",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "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."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "ellanetworks",
          "product": "core",
          "versions": [
            {
              "version": "< 1.7.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-03-30T18:53:05.536896Z",
          "id": "CVE-2026-33907",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:ellanetworks:ella_core:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.7.0",
              "matchCriteriaId": "9BAD1DBD-ED4B-49AB-A563-C4838F8F8979"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/ellanetworks/core/commit/52962660e3bd3e23c7e96b0da270ac1e0e705273",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/ellanetworks/core/releases/tag/v1.7.0",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/ellanetworks/core/security/advisories/GHSA-55q8-2gwx-29pc",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}