{"api_version":"1","generated_at":"2026-07-12T22:35:32+00:00","cve":"CVE-2021-28927","urls":{"html":"https://cve.report/CVE-2021-28927","api":"https://cve.report/api/cve/CVE-2021-28927.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-28927","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-28927"},"summary":{"title":"CVE-2021-28927","description":"The text-to-speech engine in libretro RetroArch for Windows 1.9.0 passes unsanitized input to PowerShell through platform_win32.c via the accessibility_speak_windows function, which allows attackers who have write access on filesystems that are used by RetroArch to execute code via command injection using specially a crafted file and directory names.","state":"PUBLISHED","assigner":"mitre","published_at":"2021-04-07 15:15:13","updated_at":"2026-07-05 16:16:57"},"problem_types":["CWE-78","n/a"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"4.6","severity":"","vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","data":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:P","baseScore":4.6,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"}}],"references":[{"url":"https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c","name":"https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"],"title":"RetroArch/platform_win32.c at d3dc3ee989ec6a4903c689907ffc47027f71f776 · libretro/RetroArch · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0","name":"https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Third Party Advisory"],"title":"RetroArch for Windows - Versions 1.9.0 - 1.9.4","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://libretro.com","name":"http://libretro.com","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Vendor Advisory"],"title":"Libretro – A crossplatform application API, powering the crossplatform gaming platform RetroArch","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://retroarch.com","name":"http://retroarch.com","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Product","Vendor Advisory"],"title":"RetroArch","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-28927","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28927","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"28927","vulnerable":"1","versionEndIncluding":"1.9.4","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"libretro","cpe5":"retroarch","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"28927","vulnerable":"0","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"microsoft","cpe5":"windows","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2021","cve_id":"28927","cve":"CVE-2021-28927","epss":"0.015020000","percentile":"0.712400000","score_date":"2026-07-08","updated_at":"2026-07-09 00:13:16"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-03T21:55:12.255Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"http://libretro.com"},{"tags":["x_refsource_MISC","x_transferred"],"url":"http://retroarch.com"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","value":"The text-to-speech engine in libretro RetroArch for Windows 1.9.0 passes unsanitized input to PowerShell through platform_win32.c via the accessibility_speak_windows function, which allows attackers who have write access on filesystems that are used by RetroArch to execute code via command injection using specially a crafted file and directory names."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2026-07-05T15:50:11.950Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"url":"https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c"},{"url":"https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-28927","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The text-to-speech engine in libretro RetroArch for Windows 1.9.0 passes unsanitized input to PowerShell through platform_win32.c via the accessibility_speak_windows function, which allows attackers who have write access on filesystems that are used by RetroArch to execute code via command injection using specially a crafted file and directory names."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"http://libretro.com","refsource":"MISC","url":"http://libretro.com"},{"name":"http://retroarch.com","refsource":"MISC","url":"http://retroarch.com"},{"name":"https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c","refsource":"MISC","url":"https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c"},{"name":"https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0","refsource":"MISC","url":"https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0"}]}}}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2021-28927","datePublished":"2021-04-07T14:09:35.000Z","dateReserved":"2021-03-19T00:00:00.000Z","dateUpdated":"2026-07-05T15:50:11.950Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2021-04-07 15:15:13","lastModifiedDate":"2026-07-05 16:16:57","problem_types":["CWE-78","n/a"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:P/I:P/A:P","baseScore":4.6,"accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":3.9,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:libretro:retroarch:*:*:*:*:*:*:*:*","versionStartIncluding":"1.9.0","versionEndIncluding":"1.9.4","matchCriteriaId":"76E4437F-8065-4577-A04A-2FDFE7EA623A"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*","matchCriteriaId":"A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"28927","Ordinal":"1","Title":"CVE-2021-28927","CVE":"CVE-2021-28927","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"28927","Ordinal":"1","NoteData":"The text-to-speech engine in libretro RetroArch for Windows 1.9.0 passes unsanitized input to PowerShell through platform_win32.c via the accessibility_speak_windows function, which allows attackers who have write access on filesystems that are used by RetroArch to execute code via command injection using specially a crafted file and directory names.","Type":"Description","Title":"CVE-2021-28927"},{"CveYear":"2021","CveId":"28927","Ordinal":"2","NoteData":"2021-04-07","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"28927","Ordinal":"3","NoteData":"2021-06-16","Type":"Other","Title":"Modified"}]}}}