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Vulnerability record · CVE-2018-25251 · published 4 April 2026

CVE-2018-25251: Out-of-bounds write vulnerability

Snes9K 0.0.9z contains a buffer overflow vulnerability in the Netplay Socket Port Number field that allows local attackers to trigger a structured exception handler (SEH) overwrite. Attackers can craft a malicious payload and paste it into the Socket Port Number field via the Netplay Options menu to achieve code execution through SEH chain exploitation.

8.6 CVSS 4.0 High EPSS 0.19% · top 92.7% CWE-787 · Out-of-bounds write Deferred
8.6CVSS 4.0 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
24 Jul 2026Last modified by NVD

Description

Snes9K 0.0.9z contains a buffer overflow vulnerability in the Netplay Socket Port Number field that allows local attackers to trigger a structured exception handler (SEH) overwrite. Attackers can craft a malicious payload and paste it into the Socket Port Number field via the Netplay Options menu to achieve code execution through SEH chain exploitation.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://sourceforge.net/projects/snes9k/
https://sourceforge.net/projects/snes9k/files/latest/download
https://www.exploit-db.com/exploits/45598
https://www.vulncheck.com/advisories/snes9k-9z-buffer-overflow-seh-via-netplay-socket

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Source: NIST National Vulnerability Database (record CVE-2018-25251), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.