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GHSA-V97V-XG2J-QQ42

Vulnerability from github – Published: 2026-09-04 21:31 – Updated: 2026-09-04 21:31
VLAI
Details

PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a hard-coded credentials vulnerability in DirectIo64.sys that allows local attackers to perform arbitrary physical memory writes by extracting an 8-byte key embedded as a hardcoded literal in the distributed binary and computing valid MD5 authentication tags for arbitrary IOCTL write requests. Attackers can additionally bypass a secondary validation gate by using the driver's own bit-clear IOCTL to clear a single bit in the gating instruction's displacement byte, causing all subsequent write requests to skip MAC verification, size checks, and Vendor ID checks entirely.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.5 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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{
  "affected": [],
  "aliases": [
    "CVE-2026-80114"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-321"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T19:17:28Z",
    "severity": "HIGH"
  },
  "details": "PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a hard-coded credentials vulnerability in DirectIo64.sys that allows local attackers to perform arbitrary physical memory writes by extracting an 8-byte key embedded as a hardcoded literal in the distributed binary and computing valid MD5 authentication tags for arbitrary IOCTL write requests. Attackers can additionally bypass a secondary validation gate by using the driver\u0027s own bit-clear IOCTL to clear a single bit in the gating instruction\u0027s displacement byte, causing all subsequent write requests to skip MAC verification, size checks, and Vendor ID checks entirely.",
  "id": "GHSA-v97v-xg2j-qq42",
  "modified": "2026-09-04T21:31:50Z",
  "published": "2026-09-04T21:31:50Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80114"
    },
    {
      "type": "WEB",
      "url": "https://dkom.dev/posts/directio64-disclosure"
    },
    {
      "type": "WEB",
      "url": "https://github.com/floppywiggler/directio64-disclosure"
    },
    {
      "type": "WEB",
      "url": "https://www.osforensics.com/whats-new.html"
    },
    {
      "type": "WEB",
      "url": "https://www.passmark.com/products/burnintest/history.php"
    },
    {
      "type": "WEB",
      "url": "https://www.passmark.com/products/performancetest/history.php"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/passmark-performancetest-burnintest-and-osforensics-hard-coded-credentials-authentication-bypass-via-directio64-sys"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/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",
      "type": "CVSS_V4"
    }
  ]
}



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