CVE-2018-25251: Snes9K 0.0.9z Buffer Overflow SEH via Netplay Socket

Severity: high (CVSS 8.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-04 · updated 2026-07-24
Weakness: CWE-787

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.

Affected products

Sourceforge Snes9K 0.0.9z: 0.0.9z

References

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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