CVE-2026-41429

{
  "id": "CVE-2026-41429",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-24T20:16:27.663",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontrollers. Prior to 3.3.8, there is a remotely reachable memory corruption issue in the NBNS packet handling path. When NetBIOS is enabled by calling NBNS.begin(...), the device listens on UDP port 137 and processes untrusted NBNS requests from the local network.\nThe request parser trusts the attacker-controlled name_len field without enforcing a bound consistent with the fixed-size destination buffers used later in the flow. This vulnerability is fixed in 3.3.8."
    },
    {
      "lang": "es",
      "value": "arduino-esp32 es un core de Arduino para los microcontroladores ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 y ESP32-H2. Anterior a la 3.3.8, existe un problema de corrupción de memoria alcanzable remotamente en la ruta de manejo de paquetes NBNS. Cuando NetBIOS está habilitado al llamar a NBNS.begin(...), el dispositivo escucha en el puerto UDP 137 y procesa solicitudes NBNS no confiables de la red local. El analizador de solicitudes confía en el campo name_len controlado por el atacante sin aplicar un límite consistente con los búferes de destino de tamaño fijo utilizados más adelante en el flujo. Esta vulnerabilidad está corregida en la 3.3.8."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "espressif",
          "product": "arduino-esp32",
          "versions": [
            {
              "version": "< 3.3.8",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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      {
        "source": "[email protected]",
        "type": "Secondary",
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          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9
      }
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        "ssvcData": {
          "timestamp": "2026-04-27T13:10:48.792547Z",
          "id": "CVE-2026-41429",
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              "exploitation": "poc"
            },
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              "automatable": "no"
            },
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              "technicalImpact": "total"
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      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
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      "url": "https://github.com/espressif/arduino-esp32/security/advisories/GHSA-92j9-c75g-2c5f",
      "source": "[email protected]",
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