CVE-2025-9809 Memory corruption in libretro-common
Remote attackers can execute arbitrary code via a crafted .cue file causing an out-of-bounds write in the libretro-common library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-9809?
CVE-2025-9809 is a high-severity memory corruption vulnerability in libretro-common, published on 1 Sep 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Out-of-bounds write in cdfs_open_cue_track in libretro libretro-common latest on all platforms allows remote attackers to execute arbitrary code via a crafted .cue file with a file path exceeding PATH_MAX_LENGTH that is copied using memcpy into a fixed-size buffer.
Weakness: CWE-787
Which versions are affected by CVE-2025-9809?
It affects 1 product.
Products include Libretro Libretro-Common.
How do I fix CVE-2025-9809?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-9809 being exploited?
There is no known exploitation of CVE-2025-9809 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-9809, GHSA-2cg7-x3pg-q7xf, UBUNTU-CVE-2025-9809, USN-8166-1.