CVE-2025-70994

{
  "id": "CVE-2025-70994",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-23T15:36:26.687",
  "lastModified": "2026-11-04T20:10:00.263",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Yadea T5 Electric Bicycles (models manufactured in/after 2024) have a weak authentication mechanism in their keyless entry system. The system utilizes the EV1527 fixed-code RF protocol without implementing rolling codes or cryptographic challenge-response mechanisms. This is vulnerable to signal forgery after a local attacker intercepts any legitimate key fob transmission, allowing for complete unauthorized vehicle operation via a replay attack."
    },
    {
      "lang": "es",
      "value": "Las bicicletas eléctricas Yadea T5 (modelos fabricados en/después de 2024) tienen un mecanismo de autenticación débil en su sistema de entrada sin llave. El sistema utiliza el protocolo RF de código fijo EV1527 sin implementar códigos rotatorios o mecanismos criptográficos de desafío-respuesta. Esto es vulnerable a la falsificación de señal después de que un atacante local intercepta cualquier transmisión legítima del llavero, permitiendo la operación completa no autorizada del vehículo a través de un ataque de repetición."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "version": "n/a",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-23T15:09:43.949647Z",
          "id": "CVE-2025-70994",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1390"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/ktauchathuranga/CVE-2025-70994",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/ktauchathuranga/ghost-keys",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/ktauchathuranga/CVE-2025-70994",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}