Buffer overflow in Snes9x Team

CVE-2026-39199

snes9x 1.63 allows an out-of-bounds write and denial of service via a crafted .ups file.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 2.9 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Snes9x Team — versions 1.63

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

Frequently asked questions

What is CVE-2026-39199?: CVE-2026-39199 is a low-severity vulnerability in Snes9x Team, classified under Out-of-bounds Write. CVSS score: 2.9/10. Published 2026-06-17.
How severe is CVE-2026-39199?: Low severity. CVSS v3 base score is 2.9 out of 10.