{
  "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-2023-3494",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-3494",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2023-08-01T22:13:21.634Z",
    "updatedAt": "2025-02-13T16:55:41.138Z",
    "importedAt": "2026-10-24T01:56:58.683Z",
    "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": "bhyve privileged guest escape via fwctl",
      "summary": "The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports.  The interface lets the guest copy a string into a buffer resident in the bhyve process' memory.  A bug in the state machine implementation can result in a buffer overflowing when copying this string. Malicious, privileged software running in a guest VM can exploit the buffer overflow to achieve code execution on the host in the bhyve userspace process, which typically runs as root, mitigated by the capabilities assigned through the Capsicum sandbox available to the bhyve process.",
      "affected": [
        {
          "vendor": "FreeBSD",
          "product": "FreeBSD",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "13.2-RELEASE",
              "status": "affected",
              "versionType": "release",
              "lessThan": "13.2-RELEASE-p2"
            },
            {
              "version": "13.1-RELEASE",
              "status": "affected",
              "versionType": "release",
              "lessThan": "13.1-RELEASE-p9"
            }
          ]
        }
      ]
    }
  }
}