CVE-2026-33903

{
  "id": "CVE-2026-33903",
  "sourceIdentifier": "[email protected]",
  "published": "2026-03-27T21:17:26.477",
  "lastModified": "2026-10-26T21:10:00.170",
  "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 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 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."
    }
  ],
  "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": "2026-03-30T15:42:19.338459Z",
          "id": "CVE-2026-33903",
          "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/ec77a2ad4508f8488cb356fd45b2f1efd92587f8",
      "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-f2f3-9cx3-wcmf",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}