{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-93393",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-93393",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T20:26:38.911Z",
    "updatedAt": "2026-09-18T17:35:11.797Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Heap overflow via oversized decrypted TLS record sequence in Windows Secure Channel stream",
      "summary": "A heap-based buffer overflow exists in the TLS transport layer of the MongoDB C Driver when built with the Windows platform TLS backend. A remote endpoint that the client connects to can cause the driver to write uncontrolled data outside the bounds of a heap allocation while processing incoming encrypted traffic after the TLS handshake completes. No authentication or user interaction is required, because the affected processing occurs before any application-level authentication completes. Triggering this issue may lead to memory corruption in the client process, disclosure of adjacent heap memory, or termination of the process.",
      "affected": [
        {
          "vendor": "MongoDB Inc.",
          "product": "C Driver",
          "platforms": [
            "Windows"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2.4.0",
              "status": "affected",
              "versionType": "semver"
            },
            {
              "version": "2.3.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "2.3.3"
            },
            {
              "version": "2.2.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "2.2.4"
            },
            {
              "version": "2.1.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "2.1.2"
            },
            {
              "version": "2.0.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "2.0.2"
            },
            {
              "version": "1.30.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "1.30.8"
            },
            {
              "version": "1.29.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "1.29.2"
            },
            {
              "version": "1.28.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "1.28.1"
            },
            {
              "version": "1.27.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "1.27.6"
            },
            {
              "version": "1.26.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "1.26.2"
            },
            {
              "version": "1.25.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "1.25.4"
            },
            {
              "version": "1.24.0",
              "status": "affected",
              "versionType": "semver",
              "lessThanOrEqual": "1.24.4"
            }
          ]
        }
      ]
    }
  }
}