{
  "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-2025-10101",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-10101",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-01T15:32:31.678Z",
    "updatedAt": "2026-06-12T22:34:05.090Z",
    "importedAt": "2026-10-24T01:57:24.991Z",
    "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": "Avast antivirus heap buffer OOB read when scanning a malformed Mach-O file",
      "summary": "Heap buffer out-of-bounds read vulnerability in Avast Antivirus when scanning a malformed Mach-O file may allow Local Execution of Code or Denial-of-Service of the antivirus process.\n\nThis issue affects Avast Antivirus, AVG Antivirus, Norton Antivirus, Avast One, and Avast Business Antivirus on Windows, macOS, and Linux for virus definition builds before VPS 25090300.\n\n\n\nThe affected scanning logic is delivered through a shared Gen Digital virus definition update stream. The same stream feeds the consumer antivirus products listed in this advisory and other Gen Digital products that embed the same engine. Mitigation flows through this update channel; installations at or above the listed build are not vulnerable regardless of which product consumes the stream.",
      "affected": [
        {
          "vendor": "Gen Digital",
          "product": "Avast Antivirus",
          "platforms": [
            "Windows",
            "macOS",
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "25090300"
            }
          ]
        },
        {
          "vendor": "Gen Digital",
          "product": "AVG Antivirus",
          "platforms": [
            "Windows",
            "macOS",
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "25090300"
            }
          ]
        },
        {
          "vendor": "Gen Digital",
          "product": "Norton Antivirus",
          "platforms": [
            "Windows",
            "macOS",
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "25090300"
            }
          ]
        },
        {
          "vendor": "Gen Digital",
          "product": "Avast One",
          "platforms": [
            "Windows",
            "macOS",
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "25090300"
            }
          ]
        },
        {
          "vendor": "Gen Digital",
          "product": "Avast Business Antivirus",
          "platforms": [
            "Windows",
            "macOS",
            "Linux"
          ],
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "25090300"
            }
          ]
        }
      ]
    }
  }
}