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Fencer Vulns
low 2.9

CVE-2026-39199 json

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

published 2026-06-17 4 mo ago modified 2026-10-26 14 d ago also EUVD-2026-37833

cvss
2.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits
0
none known

Summary

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

Patch / fix

  • libretro-snes9x Debian 14 1.63+dfsg-2

debian advisories DEBIAN-CVE-2026-39199

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • Snes9X team Snes9X

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.