What is CVE-2025-9809?

CVE-2025-9809 is a critical-severity vulnerability in Libretro Libretro-Common, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-09-01.

How severe is CVE-2025-9809?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2025-9809 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Libretro Libretro-Common

CVE-2025-9809

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.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (32.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Libretro Libretro-common — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

96148269-fe82-4198-b1bf-3a73ce8bc92e (Product)
96148269-fe82-4198-b1bf-3a73ce8bc92e (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2025-9809?: CVE-2025-9809 is a critical-severity vulnerability in Libretro Libretro-Common, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2025-09-01.
How severe is CVE-2025-9809?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2025-9809 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.