What’s Vulnerable › Vulnerabilities

CVE-2021-28927

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-07 · updated 2026-07-09
• Weakness: CWE-78

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.

Affected products

• libretro RetroArch: from 1.9.0 through 1.9.4

References

• https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c
• https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0
• https://github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/frontend/drivers/platform_win32.c
• https://labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0

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