Vulnerability-Lookup

CVE-2026-19398 (GCVE-0-2026-19398)

Vulnerability from cvelistv5 – Published: 2026-08-27 02:00 – Updated: 2026-08-27 02:00

Summary

“unsupported-when-assigned.” An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.Refer to the ' Security Update for ASUS FA507NV / FA507NU BIOS ' section on the ASUS Security Advisory for more information.

Severity

6.8 (Medium)


                        
                          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

CWE

CWE-787 - Out-of-bounds Write

Assigner

ASUS icscert root

References

1 reference

URL	Tags
https://www.asus.com/security-advisory

Impacted products

2 products

Vendor	Product	Version	CPE status
ASUS	FA507NV	Affected: 318 (custom) cpe:2.3:a:asus:fa507nv:318:::::::*
ASUS	FA507NU	Affected: 318 cpe:2.3:a:asus:fa507nu:318:::::::*

Credits

hex2mem

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "FA507NV",
          "vendor": "ASUS",
          "versions": [
            {
              "status": "affected",
              "version": "318",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "FA507NU",
          "vendor": "ASUS",
          "versions": [
            {
              "status": "affected",
              "version": "318"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:asus:fa507nv:318:*:*:*:*:*:*:*",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            },
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:asus:fa507nu:318:*:*:*:*:*:*:*",
                  "vulnerable": true
                }
              ],
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              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "hex2mem"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u201cunsupported-when-assigned.\u201d An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local\u0026nbsp; administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.\u003cdiv\u003eRefer to the \u0027\u0026nbsp;\nSecurity Update for ASUS FA507NV / FA507NU BIOS\u0026nbsp;\u0026nbsp;\u0026nbsp;\u0027 section on the ASUS Security Advisory for more information.\u003c/div\u003e"
            }
          ],
          "value": "\u201cunsupported-when-assigned.\u201d An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local\u00a0 administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.Refer to the \u0027\u00a0\nSecurity Update for ASUS FA507NV / FA507NU BIOS\u00a0\u00a0\u00a0\u0027 section on the ASUS Security Advisory for more information."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "HIGH",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T02:00:16.449Z",
        "orgId": "54bf65a7-a193-42d2-b1ba-8e150d3c35e1",
        "shortName": "ASUS"
      },
      "references": [
        {
          "url": "https://www.asus.com/security-advisory"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "Vulnogram 1.0.4"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "54bf65a7-a193-42d2-b1ba-8e150d3c35e1",
    "assignerShortName": "ASUS",
    "cveId": "CVE-2026-19398",
    "datePublished": "2026-08-27T02:00:16.449Z",
    "dateReserved": "2026-08-10T07:25:57.688Z",
    "dateUpdated": "2026-08-27T02:00:16.449Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-19398\",\"sourceIdentifier\":\"54bf65a7-a193-42d2-b1ba-8e150d3c35e1\",\"published\":\"2026-08-27T02:16:27.460\",\"lastModified\":\"2026-08-27T02:16:27.460\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"\u201cunsupported-when-assigned.\u201d An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local\u00a0 administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.Refer to the \u0027\u00a0\\nSecurity Update for ASUS FA507NV / FA507NU BIOS\u00a0\u00a0\u00a0\u0027 section on the ASUS Security Advisory for more information.\"}],\"affected\":[{\"source\":\"54bf65a7-a193-42d2-b1ba-8e150d3c35e1\",\"affectedData\":[{\"vendor\":\"ASUS\",\"product\":\"FA507NV\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"318\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"ASUS\",\"product\":\"FA507NU\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"318\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"54bf65a7-a193-42d2-b1ba-8e150d3c35e1\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"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/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\",\"baseScore\":6.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"HIGH\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}]},\"weaknesses\":[{\"source\":\"54bf65a7-a193-42d2-b1ba-8e150d3c35e1\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"references\":[{\"url\":\"https://www.asus.com/security-advisory\",\"source\":\"54bf65a7-a193-42d2-b1ba-8e150d3c35e1\"}]}}"
  }
}

FKIE_CVE-2026-19398

Vulnerability from fkie_nvd - Published: 2026-08-27 02:16 - Updated: 2026-08-27 02:16

Severity

6.8 (Medium) - 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

Summary

References

	URL	Tags
	54bf65a7-a193-42d2-b1ba-8e150d3c35e1	https://www.asus.com/security-advisory

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "FA507NV",
          "vendor": "ASUS",
          "versions": [
            {
              "status": "affected",
              "version": "318",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "FA507NU",
          "vendor": "ASUS",
          "versions": [
            {
              "status": "affected",
              "version": "318"
            }
          ]
        }
      ],
      "source": "54bf65a7-a193-42d2-b1ba-8e150d3c35e1"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "\u201cunsupported-when-assigned.\u201d An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local\u00a0 administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.Refer to the \u0027\u00a0\nSecurity Update for ASUS FA507NV / FA507NU BIOS\u00a0\u00a0\u00a0\u0027 section on the ASUS Security Advisory for more information."
    }
  ],
  "id": "CVE-2026-19398",
  "lastModified": "2026-08-27T02:16:27.460",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "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/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "54bf65a7-a193-42d2-b1ba-8e150d3c35e1",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-08-27T02:16:27.460",
  "references": [
    {
      "source": "54bf65a7-a193-42d2-b1ba-8e150d3c35e1",
      "url": "https://www.asus.com/security-advisory"
    }
  ],
  "sourceIdentifier": "54bf65a7-a193-42d2-b1ba-8e150d3c35e1",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "54bf65a7-a193-42d2-b1ba-8e150d3c35e1",
      "type": "Secondary"
    }
  ]
}

GHSA-MQCP-4543-826G

Vulnerability from github – Published: 2026-08-27 03:32 – Updated: 2026-08-27 03:32

Details

Severity

6.8 (Medium)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-19398"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-27T02:16:27Z",
    "severity": "MODERATE"
  },
  "details": "\u201cunsupported-when-assigned.\u201d An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local\u00a0 administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.Refer to the \u0027\u00a0\nSecurity Update for ASUS FA507NV / FA507NU BIOS\u00a0\u00a0\u00a0\u0027 section on the ASUS Security Advisory for more information.",
  "id": "GHSA-mqcp-4543-826g",
  "modified": "2026-08-27T03:32:58Z",
  "published": "2026-08-27T03:32:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19398"
    },
    {
      "type": "WEB",
      "url": "https://www.asus.com/security-advisory"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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/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"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-19398 (GCVE-0-2026-19398)

FKIE_CVE-2026-19398

GHSA-MQCP-4543-826G

Tags

Sightings

Nomenclature