CVE-2026-8863

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8863", "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b", "state": "PUBLISHED", "assignerShortName": "certcc", "dateReserved": "2026-05-18T19:41:10.790Z", "datePublished": "2026-06-09T18:10:15.426Z", "dateUpdated": "2026-06-10T15:16:35.228Z"}, "containers": {"cna": {"title": "CVE-2026-8863", "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."}], "source": {"discovery": "EXTERNAL"}, "affected": [{"vendor": "Oracle Corporation", "product": "OracleLinux(7.2) shim", "versions": [{"status": "affected", "version": "0.9"}]}, {"vendor": "PC-Doctor", "product": "Service Center Enterprise", "versions": [{"status": "affected", "version": "14", "lessThanOrEqual": "17.0.7536.900", "versionType": "custom"}]}, {"vendor": "PC-Doctor", "product": "Service Center Drive Erase", "versions": [{"status": "affected", "version": "15", "lessThanOrEqual": "17.0.7538.592", "versionType": "custom"}]}, {"vendor": "PC-Doctor", "product": "Service Center Japan", "versions": [{"status": "affected", "version": "15", "lessThanOrEqual": "17.0.7539.904", "versionType": "custom"}]}, {"vendor": "PC-Doctor", "product": "Service Center", "versions": [{"status": "affected", "version": "14", "lessThanOrEqual": "17.0.7535.900", "versionType": "custom"}]}, {"vendor": "PC-Doctor", "product": "Network Factory for Linux (Bootable Diagnostics)", "versions": [{"status": "affected", "version": "6.9", "lessThanOrEqual": "6.20.7711.267", "versionType": "custom"}]}, {"vendor": "PC-Doctor", "product": "Factory for Linux (Bootable Diagnostics)", "versions": [{"status": "affected", "version": "6.9", "lessThanOrEqual": "6.20.7710.267", "versionType": "custom"}]}, {"vendor": "Spyrus", "product": "WTGCreator", "versions": [{"status": "affected", "version": "4.2"}]}, {"vendor": "Blancco UK", "product": "WhiteCanyon WipeDrive", "versions": [{"status": "affected", "version": "8.0.0", "lessThanOrEqual": "8.1.3", "versionType": "custom"}]}, {"vendor": "baramundi software", "product": "baramundi Management Suite", "versions": [{"status": "affected", "version": "*", "lessThanOrEqual": "2024R1", "versionType": "custom"}]}, {"vendor": "SUSE Linux", "product": "OpenSUSE shim", "versions": [{"status": "affected", "version": "0.9"}]}, {"vendor": "Finland Matriculation Board", "product": "Abitti 1", "versions": [{"status": "affected", "version": "1.0.0"}]}, {"vendor": "NTC IT ROSA LLC", "product": "RosaLinux", "versions": [{"status": "affected", "version": "R9"}]}, {"vendor": "NTC IT ROSA LLC", "product": "RosaLinux", "versions": [{"status": "affected", "version": "R10"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-347: Improper Verification of Cryptographic Signature"}]}, {"descriptions": [{"lang": "en", "description": "CWE-354: Improper Validation of Integrity Check Value"}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-8863", "name": "Microsoft Vendor Security Advisory", "tags": ["vendor-advisory"]}, {"url": "https://kb.cert.org/vuls/id/616257", "name": "CERT/CC Vulnerability Notice", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "VINCE 3.0.42", "env": "prod", "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-8863"}, "credits": [{"lang": "en", "value": "Thanks to Martin Smolar of ESET for discovering and reporting this vulnerability", "type": "finder"}], "providerMetadata": {"orgId": "37e5125f-f79b-445b-8fad-9564f167944b", "shortName": "certcc", "dateUpdated": "2026-06-10T15:16:35.228Z"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-06-09T19:03:03.811729Z", "id": "CVE-2026-8863", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-09T19:03:21.716Z"}}, {"title": "CVE Program Container", "references": [{"url": "https://www.kb.cert.org/vuls/id/616257"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-06-09T19:41:27.054Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.kb.cert.org/vuls/id/616257"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-06-09T19:41:27.054Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-8863", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-06-09T19:03:03.811729Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-09T19:02:29.633Z"}}], "cna": {"title": "CVE-2026-8863", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Thanks to Martin Smolar of ESET for discovering and reporting this vulnerability"}], "affected": [{"vendor": "Oracle Corporation", "product": "OracleLinux(7.2) shim", "versions": [{"status": "affected", "version": "0.9"}]}, {"vendor": "PC-Doctor", "product": "Service Center Enterprise", "versions": [{"status": "affected", "version": "14", "versionType": "custom", "lessThanOrEqual": "17.0.7536.900"}]}, {"vendor": "PC-Doctor", "product": "Service Center Drive Erase", "versions": [{"status": "affected", "version": "15", "versionType": "custom", "lessThanOrEqual": "17.0.7538.592"}]}, {"vendor": "PC-Doctor", "product": "Service Center Japan", "versions": [{"status": "affected", "version": "15", "versionType": "custom", "lessThanOrEqual": "17.0.7539.904"}]}, {"vendor": "PC-Doctor", "product": "Service Center", "versions": [{"status": "affected", "version": "14", "versionType": "custom", "lessThanOrEqual": "17.0.7535.900"}]}, {"vendor": "PC-Doctor", "product": "Network Factory for Linux (Bootable Diagnostics)", "versions": [{"status": "affected", "version": "6.9", "versionType": "custom", "lessThanOrEqual": "6.20.7711.267"}]}, {"vendor": "PC-Doctor", "product": "Factory for Linux (Bootable Diagnostics)", "versions": [{"status": "affected", "version": "6.9", "versionType": "custom", "lessThanOrEqual": "6.20.7710.267"}]}, {"vendor": "Spyrus", "product": "WTGCreator", "versions": [{"status": "affected", "version": "4.2"}]}, {"vendor": "Blancco UK", "product": "WhiteCanyon WipeDrive", "versions": [{"status": "affected", "version": "8.0.0", "versionType": "custom", "lessThanOrEqual": "8.1.3"}]}, {"vendor": "baramundi software", "product": "baramundi Management Suite", "versions": [{"status": "affected", "version": "*", "versionType": "custom", "lessThanOrEqual": "2024R1"}]}, {"vendor": "SUSE Linux", "product": "OpenSUSE shim", "versions": [{"status": "affected", "version": "0.9"}]}, {"vendor": "Finland Matriculation Board", "product": "Abitti 1", "versions": [{"status": "affected", "version": "1.0.0"}]}, {"vendor": "NTC IT ROSA LLC", "product": "RosaLinux", "versions": [{"status": "affected", "version": "R9"}]}, {"vendor": "NTC IT ROSA LLC", "product": "RosaLinux", "versions": [{"status": "affected", "version": "R10"}]}], "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-8863", "name": "Microsoft Vendor Security Advisory", "tags": ["vendor-advisory"]}, {"url": "https://kb.cert.org/vuls/id/616257", "name": "CERT/CC Vulnerability Notice", "tags": ["third-party-advisory"]}], "x_generator": {"env": "prod", "engine": "VINCE 3.0.42", "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-8863"}, "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-347: Improper Verification of Cryptographic Signature"}]}, {"descriptions": [{"lang": "en", "description": "CWE-354: Improper Validation of Integrity Check Value"}]}], "providerMetadata": {"orgId": "37e5125f-f79b-445b-8fad-9564f167944b", "shortName": "certcc", "dateUpdated": "2026-06-10T15:16:35.228Z"}}}, "cveMetadata": {"cveId": "CVE-2026-8863", "state": "PUBLISHED", "dateUpdated": "2026-06-10T15:16:35.228Z", "dateReserved": "2026-05-18T19:41:10.790Z", "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b", "datePublished": "2026-06-09T18:10:15.426Z", "assignerShortName": "certcc"}, "dataVersion": "5.2"}

{"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"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2024R1]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Baramundi Management Suite", "source": "cna", "vendor": "Baramundi Software"}, "product": "baramundi_management_suite", "vendor": "baramundi_software"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[8.0.0,8.1.3]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "WhiteCanyon WipeDrive", "source": "cna", "vendor": "Blancco UK"}, "product": "whitecanyon_wipedrive", "vendor": "blancco_uk"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.0.0,1.0.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Abitti 1", "source": "cna", "vendor": "Finland Matriculation Board"}, "product": "abitti_1", "vendor": "finland_matriculation_board"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[R9,R9]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "RosaLinux", "source": "cna", "vendor": "NTC IT ROSA LLC"}, "product": "rosalinux", "vendor": "ntc_it_rosa"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[R10,R10]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "RosaLinux", "source": "cna", "vendor": "NTC IT ROSA LLC"}, "product": "rosalinux", "vendor": "ntc_it_rosa"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0.9,0.9]"}}], "enrichment": {"confidence": 85.0, "confidence_source": "matching", "scores": [{"score": 85.0, "source": "matching"}]}, "original": {"product": "OracleLinux(7.2) shim", "source": "cna", "vendor": "Oracle Corporation"}, "product": "oracle_linux", "vendor": "oracle_corporation"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[6.9,6.20.7710.267]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Factory for Linux (Bootable Diagnostics)", "source": "cna", "vendor": "PC-Doctor"}, "product": "factory_for_linux", "vendor": "pc-doctor"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[6.9,6.20.7711.267]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Network Factory for Linux (Bootable Diagnostics)", "source": "cna", "vendor": "PC-Doctor"}, "product": "network_factory_for_linux", "vendor": "pc-doctor"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14,17.0.7535.900]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Service Center", "source": "cna", "vendor": "PC-Doctor"}, "product": "service_center", "vendor": "pc-doctor"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15,17.0.7538.592]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Service Center Drive Erase", "source": "cna", "vendor": "PC-Doctor"}, "product": "service_center_drive_erase", "vendor": "pc-doctor"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14,17.0.7536.900]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Service Center Enterprise", "source": "cna", "vendor": "PC-Doctor"}, "product": "service_center_enterprise", "vendor": "pc-doctor"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15,17.0.7539.904]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Service Center Japan", "source": "cna", "vendor": "PC-Doctor"}, "product": "service_center_japan", "vendor": "pc-doctor"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[4.2,4.2]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "WTGCreator", "source": "cna", "vendor": "Spyrus"}, "product": "wtgcreator", "vendor": "spyrus"}], "created": "2026-06-09T21:15:05.705783+00:00", "title": "UEFI SHIM SecureBoot Bypass in Multiple Microsoft\u2011Signed Bootloaders", "updated": "2026-06-10T11:22:18.952619+00:00", "vendors": ["baramundi_software", "baramundi_software$PRODUCT$baramundi_management_suite", "blancco_uk", "blancco_uk$PRODUCT$whitecanyon_wipedrive", "finland_matriculation_board", "finland_matriculation_board$PRODUCT$abitti_1", "ntc_it_rosa", "ntc_it_rosa$PRODUCT$rosalinux", "oracle_corporation", "oracle_corporation$PRODUCT$oracle_linux", "pc-doctor", "pc-doctor$PRODUCT$factory_for_linux", "pc-doctor$PRODUCT$network_factory_for_linux", "pc-doctor$PRODUCT$service_center", "pc-doctor$PRODUCT$service_center_drive_erase", "pc-doctor$PRODUCT$service_center_enterprise", "pc-doctor$PRODUCT$service_center_japan", "spyrus", "spyrus$PRODUCT$wtgcreator"], "weaknesses": ["CWE-284", "CWE-287"]}