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    2 vulnerabilities found for BIOS Update Utility by BioStar

    CVE-2026-94146 (GCVE-0-2026-94146)

    Vulnerability from nvd – Published: 2026-09-21 07:00 – Updated: 2026-09-21 07:00
    VLAI
    Title
    BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where
    Summary
    A vulnerability was found in BioStar BIOS Update Utility 1.9.7.3. This issue affects the function sub_110BC of the file BSMEM64_W10.sys of the component IOCTL Handler. The manipulation of the argument PhysicalAddress/Size results in write-what-where condition. Attacking locally is a requirement. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
    Severity
    9.3 (Critical)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
    8.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
    8.8 (High)
    CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
    CWE
    Assigner
    References
    URL Tags
    https://vuldb.com/vuln/408061 vdb-entrytechnical-description
    https://vuldb.com/vuln/408061/cti signaturepermissions-required
    https://vuldb.com/cve/CVE-2026-94146 third-party-advisory
    https://vuldb.com/submit/894066 third-party-advisory
    Impacted products
    Vendor Product Version
    BioStar BIOS Update Utility Affected: 1.9.7.3
        cpe:2.3:o:biostar:bios_update_utility:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Credits
    Bigcat (VulDB User) VulDB CNA Team
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:biostar:bios_update_utility:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "IOCTL Handler"
          ],
          "product": "BIOS Update Utility",
          "vendor": "BioStar",
          "versions": [
            {
              "status": "affected",
              "version": "1.9.7.3"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Bigcat (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was found in BioStar BIOS Update Utility 1.9.7.3. This issue affects the function sub_110BC of the file BSMEM64_W10.sys of the component IOCTL Handler. The manipulation of the argument PhysicalAddress/Size results in write-what-where condition. Attacking locally is a requirement. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 6.8,
            "vectorString": "AV:L/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-123",
              "description": "Write-what-where Condition",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-21T07:00:09.909Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-408061 | BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/408061"
        },
        {
          "name": "VDB-408061 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/408061/cti"
        },
        {
          "name": "CVE-2026-94146 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-94146"
        },
        {
          "name": "Submit #894066 | BIOSTAR Group BIOS Update Utility 1.9.7.3 Arbitrary Kernel Memory Read/Write",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/894066"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-20T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-09-20T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-09-20T22:36:15.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where",
      "x_generator": [
        "VulDB PVTS v202609"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-94146",
    "datePublished": "2026-09-21T07:00:09.909Z",
    "dateReserved": "2026-09-20T20:31:10.779Z",
    "dateUpdated": "2026-09-21T07:00:09.909Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-94146 (GCVE-0-2026-94146)

    Vulnerability from cvelistv5 – Published: 2026-09-21 07:00 – Updated: 2026-09-21 07:00
    VLAI
    Title
    BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where
    Summary
    A vulnerability was found in BioStar BIOS Update Utility 1.9.7.3. This issue affects the function sub_110BC of the file BSMEM64_W10.sys of the component IOCTL Handler. The manipulation of the argument PhysicalAddress/Size results in write-what-where condition. Attacking locally is a requirement. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
    Severity
    9.3 (Critical)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
    8.8 (High)
    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
    8.8 (High)
    CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
    CWE
    Assigner
    References
    URL Tags
    https://vuldb.com/vuln/408061 vdb-entrytechnical-description
    https://vuldb.com/vuln/408061/cti signaturepermissions-required
    https://vuldb.com/cve/CVE-2026-94146 third-party-advisory
    https://vuldb.com/submit/894066 third-party-advisory
    Impacted products
    Vendor Product Version
    BioStar BIOS Update Utility Affected: 1.9.7.3
        cpe:2.3:o:biostar:bios_update_utility:*:*:*:*:*:*:*:*
    		Create a notification for this product.
    Credits
    Bigcat (VulDB User) VulDB CNA Team
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:o:biostar:bios_update_utility:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "IOCTL Handler"
          ],
          "product": "BIOS Update Utility",
          "vendor": "BioStar",
          "versions": [
            {
              "status": "affected",
              "version": "1.9.7.3"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Bigcat (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was found in BioStar BIOS Update Utility 1.9.7.3. This issue affects the function sub_110BC of the file BSMEM64_W10.sys of the component IOCTL Handler. The manipulation of the argument PhysicalAddress/Size results in write-what-where condition. Attacking locally is a requirement. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 6.8,
            "vectorString": "AV:L/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-123",
              "description": "Write-what-where Condition",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-21T07:00:09.909Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-408061 | BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/408061"
        },
        {
          "name": "VDB-408061 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/408061/cti"
        },
        {
          "name": "CVE-2026-94146 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-94146"
        },
        {
          "name": "Submit #894066 | BIOSTAR Group BIOS Update Utility 1.9.7.3 Arbitrary Kernel Memory Read/Write",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/894066"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-20T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-09-20T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-09-20T22:36:15.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "BioStar BIOS Update Utility IOCTL BSMEM64_W10.sys sub_110BC write-what-where",
      "x_generator": [
        "VulDB PVTS v202609"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-94146",
    "datePublished": "2026-09-21T07:00:09.909Z",
    "dateReserved": "2026-09-20T20:31:10.779Z",
    "dateUpdated": "2026-09-21T07:00:09.909Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}