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

  • 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.