CVE-2026-55687

{
  "id": "CVE-2026-55687",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-10T17:16:59.590",
  "lastModified": "2026-10-25T15:10:00.147",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. Versions 6.0.1, 5.5.4, 5.4.4, 5.3.5, and possibly prior contain an out-of-bounds write in jpeg_parse_dqt_marker() in components/esp_driver_jpeg/jpeg_parse_marker.c because the attacker-controlled DQT marker Tq nibble is used as an index into the qt_tbl array without validating that it is in the range 0..3, allowing malformed JPEG input to corrupt stack memory and reliably trigger a denial of service. This issue is fixed in version 6.0.2 and is expected to be fixed in versions 5.5.5, 5.4.5, and 5.3.6."
    },
    {
      "lang": "es",
      "value": "ESF-IDF es el Framework de Desarrollo de Internet de las Cosas (IoT) de Espressif. Las versiones 6.0.1, 5.5.4, 5.4.4, 5.3.5, y posiblemente anteriores, contienen una escritura fuera de límites en jpeg_parse_dqt_marker() en components/esp_driver_jpeg/jpeg_parse_marker.c porque el nibble Tq del marcador DQT controlado por el atacante se usa como un índice en el array qt_tbl sin validar que esté en el rango 0..3, permitiendo que una entrada JPEG malformada corrompa la memoria de la pila y desencadene de forma fiable una denegación de servicio. Este problema está corregido en la versión 6.0.2 y se espera que se corrija en las versiones 5.5.5, 5.4.5 y 5.3.6."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "espressif",
          "product": "esp-idf",
          "versions": [
            {
              "version": ">= 6.0.0, < 6.0.2",
              "status": "affected"
            },
            {
              "version": ">= 5.5.0, <= 5.5.4",
              "status": "affected"
            },
            {
              "version": ">= 5.4.0, <= 5.4.4",
              "status": "affected"
            },
            {
              "version": "<= 5.3.5",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-10T20:53:12.598119Z",
          "id": "CVE-2026-55687",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/espressif/esp-idf/commit/303c01305acb8ae5c4eb24a1786300681b4822a4",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/6ffafe8e93142ef8ffe51a6311d4abfc0f10fe77",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/7ccfc00f39faf1b7e5919f45b56fe44ba699d7c1",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/82c5c2dad45313786fb7e973059bc9094d95c3b2",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/espressif/esp-idf/commit/f2df45bcedef11354e83c31a9718d680a68422c4",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/espressif/esp-idf/releases/tag/v6.0.2",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/espressif/esp-idf/security/advisories/GHSA-v6r2-f6p2-88cj",
      "source": "[email protected]"
    }
  ]
}