{
  "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-2026-6643",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-6643",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-20T06:34:27.511Z",
    "updatedAt": "2026-04-20T13:46:07.764Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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": "A stack-based buffer overflow vulnerability in the VPN Clients on the ADM",
      "summary": "A stack-based buffer overflow vulnerability was found in the VPN Clients on the ADM. The issue stems from the use of unbounded sscanf() and passing user-controlled data directly to printf(). Due to the lack of PIE and Stack Canary protections, an authenticated remote attacker can exploit these to execute arbitrary code as the web server user. \nAffected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RR42 as well as from ADM 5.0.0 through ADM 5.1.2.REO1.",
      "affected": [
        {
          "vendor": "ASUSTOR Inc.",
          "product": "ADM",
          "packageName": "VPN Clients",
          "platforms": [
            "Linux",
            "x86",
            "ARM",
            "64 bit"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4.1.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "4.3.3.RR42"
            },
            {
              "version": "5.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThanOrEqual": "5.1.2.REO1"
            }
          ]
        }
      ]
    }
  }
}