CVE-2021-28927

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Summary

CVECVE-2021-28927
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-04-07 15:15:13 UTC
Updated2026-07-05 16:16:57 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

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

EPSS: 0.015020000 probability, percentile 0.712400000 (date 2026-07-08)

Problem Types: CWE-78 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:L/AC:L/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Libretro Retroarch All All All All
Operating System Microsoft Windows - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
RetroArch/platform_win32.c at d3dc3ee989ec6a4903c689907ffc47027f71f776 · libretro/RetroArch · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
RetroArch for Windows - Versions 1.9.0 - 1.9.4 af854a3a-2127-422b-91ae-364da2661108 labs.bishopfox.com Exploit, Third Party Advisory
Libretro – A crossplatform application API, powering the crossplatform gaming platform RetroArch af854a3a-2127-422b-91ae-364da2661108 libretro.com Exploit, Vendor Advisory
RetroArch af854a3a-2127-422b-91ae-364da2661108 retroarch.com Product, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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