FKIE_CVE-2025-4275

Vulnerability from fkie_nvd - Published: 2025-06-11 01:15 - Updated: 2026-06-17 09:32
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
A vulnerability in the digital signature verification process does not properly validate variable attributes which allows an attacker to bypass signature verification by creating a non-authenticated NVRAM variable. An attacker may to execute arbitrary signed UEFI code and bypass Secure Boot.
References
8338d8cb-57f7-4252-abc0-96fd13e98d21https://www.insyde.com/security-pledge/sa-2025002/
af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/211341
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "platforms": [
            "kernel 5.2",
            "kernel 5.3",
            "kernel 5.4",
            "kernel 5.5",
            "kernel 5.6",
            "kernel 5.7"
          ],
          "product": "InsydeH2O",
          "vendor": "Insyde Software",
          "versions": [
            {
              "lessThan": "05.2A.16",
              "status": "affected",
              "version": "Kernel 5.2",
              "versionType": "Tag"
            },
            {
              "lessThan": "05.39.16",
              "status": "affected",
              "version": "Kernel 5.3",
              "versionType": "Tag"
            },
            {
              "lessThan": "05.47.16",
              "status": "affected",
              "version": "Kernel 5.4",
              "versionType": "Tag"
            },
            {
              "lessThan": "05.55.16",
              "status": "affected",
              "version": "Kernel 5.5",
              "versionType": "Tag"
            },
            {
              "lessThan": "05.62.16",
              "status": "affected",
              "version": "Kernel 5.6",
              "versionType": "Tag"
            },
            {
              "lessThan": "05.71.16",
              "status": "affected",
              "version": "Kernel 5.7",
              "versionType": "Tag"
            }
          ]
        }
      ],
      "source": "8338d8cb-57f7-4252-abc0-96fd13e98d21"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability in the digital signature verification process does not properly validate variable attributes which allows an attacker to bypass signature verification by creating a non-authenticated NVRAM variable. An attacker may to execute arbitrary signed UEFI code and bypass Secure Boot."
    },
    {
      "lang": "es",
      "value": "Al ejecutar la utilidad proporcionada, se cambia el certificado en cualquier BIOS Insyde y luego se puede iniciar el archivo .efi adjunto."
    }
  ],
  "id": "CVE-2025-4275",
  "lastModified": "2026-06-17T09:32:55.380",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.1,
        "impactScore": 6.0,
        "source": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-4275",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-06-11T13:38:13.231273Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-06-11T01:15:20.750",
  "references": [
    {
      "source": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
      "url": "https://www.insyde.com/security-pledge/sa-2025002/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.kb.cert.org/vuls/id/211341"
    }
  ],
  "sourceIdentifier": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
  "vulnStatus": "Deferred"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.