FKIE_CVE-2026-8863

Vulnerability from fkie_nvd - Published: 2026-06-09 19:17 - Updated: 2026-07-23 09:10
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Multiple Microsoft-sigend UEFI SHIM bootloaders are vulnerable to SecureBoot bypass. An attacker with administrative privileges or the ability to modify the boot process could use one of the vulnerable shim bootloaders to bypass Secure Boot protections and execute arbitrary code before the operating system loads. Specific UEFI DBX update is required to block these vulnerable boot loaders.
References
cret@cert.orghttps://kb.cert.org/vuls/id/616257
cret@cert.orghttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-8863
af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/616257
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "OracleLinux(7.2) shim",
          "vendor": "Oracle Corporation",
          "versions": [
            {
              "status": "affected",
              "version": "0.9"
            }
          ]
        },
        {
          "product": "Service Center Enterprise",
          "vendor": "PC-Doctor",
          "versions": [
            {
              "lessThanOrEqual": "17.0.7536.900",
              "status": "affected",
              "version": "14",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Service Center Drive Erase",
          "vendor": "PC-Doctor",
          "versions": [
            {
              "lessThanOrEqual": "17.0.7538.592",
              "status": "affected",
              "version": "15",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Service Center Japan",
          "vendor": "PC-Doctor",
          "versions": [
            {
              "lessThanOrEqual": "17.0.7539.904",
              "status": "affected",
              "version": "15",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Service Center",
          "vendor": "PC-Doctor",
          "versions": [
            {
              "lessThanOrEqual": "17.0.7535.900",
              "status": "affected",
              "version": "14",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Network Factory for Linux (Bootable Diagnostics)",
          "vendor": "PC-Doctor",
          "versions": [
            {
              "lessThanOrEqual": "6.20.7711.267",
              "status": "affected",
              "version": "6.9",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Factory for Linux (Bootable Diagnostics)",
          "vendor": "PC-Doctor",
          "versions": [
            {
              "lessThanOrEqual": "6.20.7710.267",
              "status": "affected",
              "version": "6.9",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "WTGCreator",
          "vendor": "Spyrus",
          "versions": [
            {
              "status": "affected",
              "version": "4.2"
            }
          ]
        },
        {
          "product": "WhiteCanyon WipeDrive",
          "vendor": "Blancco UK",
          "versions": [
            {
              "lessThanOrEqual": "8.1.3",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "baramundi Management Suite",
          "vendor": "baramundi software",
          "versions": [
            {
              "lessThanOrEqual": "2024R1",
              "status": "affected",
              "version": "*",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "OpenSUSE shim",
          "vendor": "SUSE Linux",
          "versions": [
            {
              "status": "affected",
              "version": "0.9"
            }
          ]
        },
        {
          "product": "Abitti 1",
          "vendor": "Finland Matriculation Board",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.0"
            }
          ]
        },
        {
          "product": "RosaLinux",
          "vendor": "NTC IT ROSA LLC",
          "versions": [
            {
              "status": "affected",
              "version": "R9"
            }
          ]
        },
        {
          "product": "RosaLinux",
          "vendor": "NTC IT ROSA LLC",
          "versions": [
            {
              "status": "affected",
              "version": "R10"
            }
          ]
        }
      ],
      "source": "cret@cert.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple Microsoft-sigend UEFI SHIM bootloaders are vulnerable to SecureBoot bypass. An attacker with administrative privileges or the ability to modify the boot process could use one of the vulnerable shim bootloaders to bypass Secure Boot protections and execute arbitrary code before the operating system loads. Specific UEFI DBX update is required to block these vulnerable boot loaders."
    },
    {
      "lang": "es",
      "value": "M\u00faltiples cargadores de arranque UEFI SHIM firmados por Microsoft son vulnerables a una omisi\u00f3n de SecureBoot. Un atacante con privilegios administrativos o la capacidad de modificar el proceso de arranque podr\u00eda usar uno de los cargadores de arranque shim vulnerables para eludir las protecciones de Secure Boot y ejecutar c\u00f3digo arbitrario antes de que el sistema operativo cargue. Se requiere una actualizaci\u00f3n espec\u00edfica de UEFI DBX para bloquear estos cargadores de arranque vulnerables."
    }
  ],
  "id": "CVE-2026-8863",
  "lastModified": "2026-07-23T09:10:00.113",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-8863",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-09T19:03:03.811729Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-09T19:17:59.210",
  "references": [
    {
      "source": "cret@cert.org",
      "url": "https://kb.cert.org/vuls/id/616257"
    },
    {
      "source": "cret@cert.org",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-8863"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.kb.cert.org/vuls/id/616257"
    }
  ],
  "sourceIdentifier": "cret@cert.org",
  "vulnStatus": "Deferred"
}



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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 patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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