Is CVE-2018-25251 actively exploited?

No active exploitation of CVE-2018-25251 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-25251 be exploited remotely?

No. CVE-2018-25251 requires local access to exploit.

What is the CVSS score of CVE-2018-25251?

CVE-2018-25251 has a CVSS score of 8.4 (HIGH).

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HIGH

CVE-2018-25251

CWE-787Published: April 4, 2026· Updated: Apr 7, 2026

8.4

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.3th

Official 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.

NVD Source

Technical Analysis

CVE-2018-25251 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.4.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.