motherboards firmware — security advisory

{
  "id": "2b6df06a1612350692c099f4fe4ce73be7349c1f930c2019cb6550cf719cc1d9",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-88781",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-88781",
    "summary": "Untrusted Pointer Dereference in ASUS certain motherboards firmware allows a kernel-level privileges user can supply an arbitrary memory address via an I/O command, leading to subsequent system information being tampered with or causing a system crash. Refer to the 'Security Update for Multiple ASUS Motherboards' section on the ASUS Security Advisory for more information.",
    "evidence": "cve:CVE-2026-88781",
    "products": [
      {
        "name": {
          "value": "motherboards firmware",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-88781",
      "aliases": [
        "CVE-2026-88781"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "Safety": "NOT_DEFINED",
            "version": "4.0",
            "Recovery": "NOT_DEFINED",
            "baseScore": 6.8,
            "Automatable": "NOT_DEFINED",
            "attackVector": "LOCAL",
            "baseSeverity": "MEDIUM",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
            "exploitMaturity": "NOT_DEFINED",
            "providerUrgency": "NOT_DEFINED",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "HIGH",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "ASUS",
          "product": "motherboards firmware",
          "versions": [
            {
              "status": "affected",
              "version": "A520/B550 series Before 3644 4304",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "X570 Series Before 5054",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "A620/A620A Series Before 4003 4004"
            },
            {
              "status": "affected",
              "version": "B650 Series Before 1303 4003 4004"
            },
            {
              "status": "affected",
              "version": "X670 Series Before 4003 4004"
            },
            {
              "status": "affected",
              "version": "B840 Series Before 1804"
            },
            {
              "status": "affected",
              "version": "B850 Series Before 1103 1804 2503"
            },
            {
              "status": "affected",
              "version": "X870 Series Before 1804 2503"
            },
            {
              "status": "affected",
              "version": "X870E Series \tBefore 1103 2503"
            },
            {
              "status": "affected",
              "version": "Knoll Series Before 4003"
            },
            {
              "status": "affected",
              "version": "TRX50 Series Before 0703 1403"
            },
            {
              "status": "affected",
              "version": "W790 Series Before 2101"
            },
            {
              "status": "affected",
              "version": "WRX90 Series Before 1403"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-27T02:01:00.588Z",
      "provider": "cve",
      "references": [
        "https://www.asus.com/security-advisory"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "54bf65a7-a193-42d2-b1ba-8e150d3c35e1",
          "shortName": "ASUS",
          "dateUpdated": "2026-10-27T02:01:00.588Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-88781",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 379097,
  "published_at": "2026-10-27T02:01:00.588+00:00"
}