fkie_nvd - fkie_cve-2025-4275

FKIE_CVE-2025-4275

Vulnerability from fkie_nvd - Published: 2025-06-11 01:15 - Updated: 2025-07-30 08:15

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

	URL	Tags
	8338d8cb-57f7-4252-abc0-96fd13e98d21	https://www.insyde.com/security-pledge/sa-2025002/
	af854a3a-2127-422b-91ae-364da2661108	https://www.kb.cert.org/vuls/id/211341

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "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": "2025-07-30T08:15:34.240",
  "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"
      }
    ]
  },
  "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": "Awaiting Analysis"
}

CVE-2025-4275 (GCVE-0-2025-4275)

Vulnerability from cvelistv5 – Published: 2025-06-11 00:25 – Updated: 2025-08-14 05:58

Summary

Severity ?

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CWE

cwe-284: Improper Access Control

Assigner

Insyde

References

URL

Tags

https://www.insyde.com/security-pledge/sa-2025002/

Impacted products

	Vendor	Product	Version
	Insyde Software	InsydeH2O	Affected: Kernel 5.2 , < 05.2A.16 (Tag) Affected: Kernel 5.3 , < 05.39.16 (Tag) Affected: Kernel 5.4 , < 05.47.16 (Tag) Affected: Kernel 5.5 , < 05.55.16 (Tag) Affected: Kernel 5.6 , < 05.62.16 (Tag) Affected: Kernel 5.7 , < 05.71.16 (Tag)

Credits

Thanks to Nikolaj Schlej, independent firmware security researcher, for reporting the vulnerability and engaging in this coordinated disclosure.

Show details on NVD website

JSON

To clipboard

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          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/211341"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
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                "id": "CVE-2025-4275",
                "options": [
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-11T13:38:13.231273Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-30T13:30:23.397Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
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          "platforms": [
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            "kernel 5.3",
            "kernel 5.4",
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            "kernel 5.6",
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          ],
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          "vendor": "Insyde Software",
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              "version": "Kernel 5.2",
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              "version": "Kernel 5.3",
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      ],
      "datePublic": "2025-06-10T00:18:00.000Z",
      "descriptions": [
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          "scenarios": [
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              "lang": "en",
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          ]
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      "problemTypes": [
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      "solutions": [
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      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "SecureFlashDxe: Incorrect UEFI variable attributes check allows usage of invalid certificate",
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  "cveMetadata": {
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    "dateReserved": "2025-05-05T01:59:27.834Z",
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  "dataVersion": "5.1"
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Sightings

Author	Source	Type	Date

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.

Action not permitted

FKIE_CVE-2025-4275

CVE-2025-4275 (GCVE-0-2025-4275)

Tags

Sightings

Nomenclature