CVE-2026-4156

{
  "id": "CVE-2026-4156",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-11T01:16:17.360",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ChargePoint Home Flex OCPP getpreq Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of ChargePoint Home Flex EV chargers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of OCPP messages. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-26339."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de ejecución remota de código por desbordamiento de búfer basado en pila en ChargePoint Home Flex OCPP getpreq. Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar código arbitrario en instalaciones afectadas de cargadores de vehículos eléctricos ChargePoint Home Flex. La autenticación no es necesaria para explotar esta vulnerabilidad.\n\nEl fallo específico existe en el manejo de mensajes OCPP. El problema se debe a la falta de validación adecuada de la longitud de los datos proporcionados por el usuario antes de copiarlos a un búfer basado en pila de longitud fija. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de root. Fue ZDI-CAN-26339."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "ChargePoint",
          "product": "Home Flex",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "5.5.4.13",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9
      }
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        "ssvcData": {
          "timestamp": "2026-04-13T17:38:14.819060Z",
          "id": "CVE-2026-4156",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
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        }
      }
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  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ]
    }
  ],
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  "references": [
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-196/",
      "source": "[email protected]",
      "tags": [
        "Third Party Advisory"
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    }
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}