RCE in Libretro Retroarch
CVE-2021-28927
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
References
- af854a3a-2127-422b-91ae-364da2661108 (Exploit, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Product, Vendor Advisory)
- github.com/libretro/RetroArch/blob/d3dc3ee989ec6a4903c689907ffc47027f71f776/fro… (Patch, Third Party Advisory)
- labs.bishopfox.com/advisories/retroarch-for-windows-version-1.9.0 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28927?
- CVE-2021-28927 is a high-severity vulnerability in Libretro Retroarch, classified under OS Command Injection. CVSS score: 7.8/10. Published 2021-04-07.
- How severe is CVE-2021-28927?
- High severity. CVSS v3 base score is 7.8 out of 10.