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CVE-2026-11824

Estado: AnalizadaAlta (8.5)—

SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5.

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.

AV:L + UI:P indica ejecución en cliente (T1203): abrir BD SQLite manipulada. Buffer overflow permite ejecución de código (T1059) o crash DoS (T1499.004).

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

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationFilter Network TrafficExecution PreventionBehavior Prevention on Endpoint

Tecnologías afectadas (1)

Sqlite — Sqlite

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-11824",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-11824",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-09T19:41:10.263986Z"
        }
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          "attackVector": "LOCAL",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 1.8
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "disclosure@vulncheck.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.5,
          "Automatable": "NOT_DEFINED",
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "PASSIVE",
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          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  },
  "affected": [
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      "affectedData": [
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          "vendor": "SQLite",
          "product": "SQLite",
          "versions": [
            {
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              "version": "0",
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              "versionType": "custom"
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          ],
          "platforms": [
            "All platforms where SQLITE_ENABLE_FTS5 is defined"
          ],
          "collectionURL": "https://sqlite.org/",
          "defaultStatus": "unaffected"
        }
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  ],
  "published": "2026-06-09T20:16:32.300",
  "references": [
    {
      "url": "https://sqlite.org/releaselog/3_53_2.html",
      "tags": [
        "Release Notes"
      ],
      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://sqlite.org/src/info/061febcf41ca",
      "tags": [
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        "Patch"
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    {
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      "tags": [
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    },
    {
      "url": "https://www.vulncheck.com/advisories/sqlite-before-heap-buffer-overflow-via-fts5-fts5chunkiterate",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "disclosure@vulncheck.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "disclosure@vulncheck.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "SQLite before 3.53.2 contains a heap-based buffer overflow vulnerability in the FTS5 full-text search extension that allows attackers to cause a crash or execute arbitrary code by supplying a crafted database with malicious continuation page metadata specifying a szLeaf value smaller than 4. Attackers can trigger an integer underflow in fts5ChunkIterate() causing an inflated remaining byte count during FTS5 MATCH query processing, leading to a heap buffer overflow of attacker-controlled data in applications compiled with SQLITE_ENABLE_FTS5."
    },
    {
      "lang": "es",
      "value": "SQLite antes de 3.53.2 contiene una vulnerabilidad de desbordamiento de búfer basado en montículo en la extensión de búsqueda de texto completo FTS5 que permite a los atacantes causar un fallo o ejecutar código arbitrario al proporcionar una base de datos manipulada con metadatos de página de continuación maliciosos especificando un valor szLeaf menor que 4. Los atacantes pueden desencadenar un desbordamiento negativo de enteros en fts5ChunkIterate() causando un recuento inflado de bytes restantes durante el procesamiento de consultas FTS5 MATCH, lo que lleva a un desbordamiento de búfer de montículo de datos controlados por el atacante en aplicaciones compiladas con SQLITE_ENABLE_FTS5."
    }
  ],
  "lastModified": "2026-07-23T09:10:00.113",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sqlite:sqlite:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "69DA84C5-3281-4906-BB2A-0B16619D334C",
              "versionEndExcluding": "3.53.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com"
}