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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.

PUBLISHED Reserved 2026-04-04 | Published 2026-04-04 | Updated 2026-04-06 | Assigner VulnCheck




HIGH: 8.6CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
HIGH: 8.4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Out-of-bounds Write

Product status

0.0.9z
affected

Credits

Abdullah Alıç finder

References

www.exploit-db.com/exploits/45598 (ExploitDB-45598) exploit

sourceforge.net/projects/snes9k/ (Official Product Homepage) product

sourceforge.net/projects/snes9k/files/latest/download (Product Reference) product

www.vulncheck.com/...-buffer-overflow-seh-via-netplay-socket (VulnCheck Advisory: Snes9K 0.0.9z Buffer Overflow SEH via Netplay Socket) third-party-advisory

cve.org (CVE-2018-25251)

nvd.nist.gov (CVE-2018-25251)

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