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4 vulnerabilities found for UEFI-GenericComponentSmmEntry by GIGABYTE

CVE-2025-7027 (GCVE-0-2025-7027)
Vulnerability from nvd
Published
2025-07-11 15:24
Modified
2025-11-03 20:07
Severity ?
8.2 (High) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
Summary
A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control both the read and write addresses used by the CommandRcx1 function. The write target is derived from an unvalidated UEFI NVRAM variable (SetupXtuBufferAddress), while the write content is read from an attacker-controlled pointer based on the RBX register. This dual-pointer dereference enables arbitrary memory writes within System Management RAM (SMRAM), leading to potential SMM privilege escalation and firmware compromise.
References
Impacted products
Vendor Product Version
GIGABYTE UEFI-GenericComponentSmmEntry Version: 1.0.0
 Create a notification for this product.
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{
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    "adp": [
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        "metrics": [
          {
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              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
              "scope": "CHANGED",
              "userInteraction": "NONE",
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              "version": "3.1"
            }
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                "options": [
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                  },
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                "timestamp": "2025-07-12T03:55:16.831604Z",
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              },
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            }
          }
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        "providerMetadata": {
          "dateUpdated": "2025-07-15T14:44:51.936Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:07:21.390Z",
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        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/746790"
          }
        ],
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      }
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        {
          "product": "UEFI-GenericComponentSmmEntry",
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            {
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              "version": "1.0.0"
            }
          ]
        }
      ],
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        {
          "lang": "en",
          "value": "A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control both the read and write addresses used by the CommandRcx1 function. The write target is derived from an unvalidated UEFI NVRAM variable (SetupXtuBufferAddress), while the write content is read from an attacker-controlled pointer based on the RBX register. This dual-pointer dereference enables arbitrary memory writes within System Management RAM (SMRAM), leading to potential SMM privilege escalation and firmware compromise."
        }
      ],
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            {
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            }
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        }
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        "dateUpdated": "2025-07-11T15:24:26.568Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://www.gigabyte.com/Support/Security"
        },
        {
          "url": "https://www.binarly.io/advisories/brly-2025-009"
        },
        {
          "url": "https://kb.cert.org/vuls/id/746790"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "SMM Arbitrary Write via Dual-Controlled Pointers in CommandRcx1",
      "x_generator": {
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        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2025-7027"
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  },
  "cveMetadata": {
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    "datePublished": "2025-07-11T15:24:26.568Z",
    "dateReserved": "2025-07-02T15:43:08.076Z",
    "dateUpdated": "2025-11-03T20:07:21.390Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-7026 (GCVE-0-2025-7026)
Vulnerability from nvd
Published
2025-07-11 15:27
Modified
2025-11-03 20:07
Severity ?
8.2 (High) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
Summary
A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control the RBX register, which is used as an unchecked pointer in the CommandRcx0 function. If the contents at RBX match certain expected values (e.g., '$DB$' or '2DB$'), the function performs arbitrary writes to System Management RAM (SMRAM), leading to potential privilege escalation to System Management Mode (SMM) and persistent firmware compromise.
References
Impacted products
Vendor Product Version
GIGABYTE UEFI-GenericComponentSmmEntry Version: 1.0.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
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              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
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                "options": [
                  {
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                  },
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                  },
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                ],
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                "timestamp": "2025-07-11T00:00:00+00:00",
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              },
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        ],
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          "dateUpdated": "2025-07-12T03:55:15.583Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:07:19.993Z",
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        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/746790"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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        {
          "product": "UEFI-GenericComponentSmmEntry",
          "vendor": "GIGABYTE",
          "versions": [
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            }
          ]
        }
      ],
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        {
          "lang": "en",
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        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "description": "CWE-822 Untrusted Pointer Dereference",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-11T15:27:34.960Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://www.gigabyte.com/Support/Security"
        },
        {
          "url": "https://www.binarly.io/advisories/brly-dva-2025-008"
        },
        {
          "url": "https://kb.cert.org/vuls/id/746790"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "SMM Arbitrary Write via Unchecked RBX Pointer in CommandRcx0",
      "x_generator": {
        "engine": "VINCE 3.0.21",
        "env": "prod",
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    "datePublished": "2025-07-11T15:27:34.960Z",
    "dateReserved": "2025-07-02T15:42:52.209Z",
    "dateUpdated": "2025-11-03T20:07:19.993Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-7026 (GCVE-0-2025-7026)
Vulnerability from cvelistv5
Published
2025-07-11 15:27
Modified
2025-11-03 20:07
Severity ?
8.2 (High) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
Summary
A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control the RBX register, which is used as an unchecked pointer in the CommandRcx0 function. If the contents at RBX match certain expected values (e.g., '$DB$' or '2DB$'), the function performs arbitrary writes to System Management RAM (SMRAM), leading to potential privilege escalation to System Management Mode (SMM) and persistent firmware compromise.
References
Impacted products
Vendor Product Version
GIGABYTE UEFI-GenericComponentSmmEntry Version: 1.0.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 8.2,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-7026",
                "options": [
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                  },
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-11T00:00:00+00:00",
                "version": "2.0.3"
              },
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          }
        ],
        "providerMetadata": {
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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
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          }
        ],
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      }
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        {
          "product": "UEFI-GenericComponentSmmEntry",
          "vendor": "GIGABYTE",
          "versions": [
            {
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              "version": "1.0.0"
            }
          ]
        }
      ],
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        {
          "lang": "en",
          "value": "A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control the RBX register, which is used as an unchecked pointer in the CommandRcx0 function. If the contents at RBX match certain expected values (e.g., \u0027$DB$\u0027 or \u00272DB$\u0027), the function performs arbitrary writes to System Management RAM (SMRAM), leading to potential privilege escalation to System Management Mode (SMM) and persistent firmware compromise."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-822 Untrusted Pointer Dereference",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-11T15:27:34.960Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://www.gigabyte.com/Support/Security"
        },
        {
          "url": "https://www.binarly.io/advisories/brly-dva-2025-008"
        },
        {
          "url": "https://kb.cert.org/vuls/id/746790"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "SMM Arbitrary Write via Unchecked RBX Pointer in CommandRcx0",
      "x_generator": {
        "engine": "VINCE 3.0.21",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2025-7026"
      }
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  },
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    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
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    "dateReserved": "2025-07-02T15:42:52.209Z",
    "dateUpdated": "2025-11-03T20:07:19.993Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-7027 (GCVE-0-2025-7027)
Vulnerability from cvelistv5
Published
2025-07-11 15:24
Modified
2025-11-03 20:07
Severity ?
8.2 (High) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
Summary
A vulnerability in the Software SMI handler (SwSmiInputValue 0xB2) allows a local attacker to control both the read and write addresses used by the CommandRcx1 function. The write target is derived from an unvalidated UEFI NVRAM variable (SetupXtuBufferAddress), while the write content is read from an attacker-controlled pointer based on the RBX register. This dual-pointer dereference enables arbitrary memory writes within System Management RAM (SMRAM), leading to potential SMM privilege escalation and firmware compromise.
References
Impacted products
Vendor Product Version
GIGABYTE UEFI-GenericComponentSmmEntry Version: 1.0.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
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              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
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              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
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                "options": [
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                  },
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                  },
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                ],
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          }
        ],
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      }
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    "cna": {
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        {
          "product": "UEFI-GenericComponentSmmEntry",
          "vendor": "GIGABYTE",
          "versions": [
            {
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            }
          ]
        }
      ],
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        {
          "lang": "en",
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        }
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        "dateUpdated": "2025-07-11T15:24:26.568Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
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          "url": "https://www.gigabyte.com/Support/Security"
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        },
        {
          "url": "https://kb.cert.org/vuls/id/746790"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
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        "env": "prod",
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    "state": "PUBLISHED"
  },
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}