« Volver al listado

CVE-2026-45542

Estado: AnalizadaAlta (7.1)—

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a heap buffer overflow exists in the Security Scheme 2 (SRP6a) session-setup path of the protocomm component. The first-phase handler (handle_session_command0() in components/protocomm/src/security/security2.c) trusts the length of a client-supplied protobuf field for the SRP6a username and copies it into a buffer whose size is derived from a narrower destination type. The resulting truncation-versus-copy asymmetry corrupts the heap when an oversized value is supplied. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Buffer overflow en protocomm (red adyacente, AV:A, CWE-122) permite corrupción de heap y potencial ejecución de código en dispositivo IoT ESP-IDF tras recibir protobuf malformado.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementDisable or Remove Feature or ProgramVulnerability ScanningThreat Intelligence ProgramRestrict Web-Based ContentNetwork Segmentation

Tecnologías afectadas (1)

Espressif — Esp-idf

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-45542",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-45542",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-10T15:16:06.919477Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "espressif",
          "product": "esp-idf",
          "versions": [
            {
              "status": "affected",
              "version": "= 5.2.6"
            },
            {
              "status": "affected",
              "version": "= 5.3.5"
            },
            {
              "status": "affected",
              "version": "= 5.4.4"
            },
            {
              "status": "affected",
              "version": "= 5.5.4"
            },
            {
              "status": "affected",
              "version": "= 6.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-06-10T02:16:33.103",
  "references": [
    {
      "url": "https://github.com/espressif/esp-idf/commit/0ea58d79845ad674d0358d5de246015a68c4cb4f",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/56c3e385611e63162d0f2f8504ac4ae2ccfccef0",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/71eb2dbe6aaef830719ecac8edf409e2992b64b2",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/9b4cacf9cbc69379972de6a2247fcf5af9240961",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/a2f4554f10ba075c98cbc67464db096ba32497cf",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/f5d24a7e919bc5f447091479656b86da6762a103",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-9r76-858f-v6jh",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.2.6, 5.3.5, 5.4.4, 5.5.4, and 6.0, a heap buffer overflow exists in the Security Scheme 2 (SRP6a) session-setup path of the protocomm component. The first-phase handler (handle_session_command0() in components/protocomm/src/security/security2.c) trusts the length of a client-supplied protobuf field for the SRP6a username and copies it into a buffer whose size is derived from a narrower destination type. The resulting truncation-versus-copy asymmetry corrupts the heap when an oversized value is supplied. This issue has been patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.5, and 6.0.1."
    },
    {
      "lang": "es",
      "value": "ESF-IDF es el Framework de Desarrollo de Internet de las Cosas (IoT) de Espressif. En las versiones 5.2.6, 5.3.5, 5.4.4, 5.5.4 y 6.0, existe un desbordamiento de búfer de pila en la ruta de configuración de sesión del Esquema de Seguridad 2 (SRP6a) del componente protocomm. El gestor de primera fase (handle_session_command0() en components/protocomm/src/security/security2.c) confía en la longitud de un campo protobuf proporcionado por el cliente para el nombre de usuario SRP6a y lo copia en un búfer cuyo tamaño se deriva de un tipo de destino más estrecho. La asimetría resultante de truncamiento versus copia corrompe la pila cuando se suministra un valor sobredimensionado. Este problema ha sido parcheado en las versiones 5.2.7, 5.3.6, 5.4.5, 5.5.5 y 6.0.1."
    }
  ],
  "lastModified": "2026-07-23T09:10:00.113",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:5.2.6:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "37A040C2-E9D4-4678-9A10-74B5AEE4901D"
            },
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:5.3.5:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "662FF5D0-F1CA-46B6-B574-46B2B1AE0C27"
            },
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:5.4.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AFFE1121-2E19-45C4-A597-35E029748C99"
            },
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:5.5.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2D53A845-578D-4153-BE97-B24E4B75F3BE"
            },
            {
              "criteria": "cpe:2.3:a:espressif:esp-idf:6.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F9D5D616-4CBC-480A-A7CF-4B80D7D3FA17"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}