📄 Description (English)
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.
🤖 AI Executive Summary
CVE-2018-25251 is a buffer overflow vulnerability in Snes9K 0.0.9z affecting the Netplay Socket Port Number field, allowing local attackers to overwrite SEH chains and achieve arbitrary code execution. With a CVSS score of 8.4 and no available patch, this poses a significant risk to users running vulnerable versions. The vulnerability requires local access and user interaction but can lead to complete system compromise.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 24, 2026 09:17
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily affects individual users and small organizations running Snes9K emulator software. While not directly impacting critical Saudi infrastructure sectors (banking, government, energy, telecom), it poses risk to: (1) Educational institutions using emulators for computer science labs, (2) Government cybersecurity training facilities, (3) Individual government/private sector employees using emulators on workstations. The lack of patch availability increases risk duration. Impact is limited to local execution scenarios but could be leveraged in targeted attacks against government cybersecurity personnel or educational institutions.
🏢 Affected Saudi Sectors
Education
Government (Cybersecurity Training)
Research Institutions
Individual Users
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify and inventory all systems running Snes9K 0.0.9z or earlier versions
2. Restrict local access to affected systems and disable Netplay functionality if not required
3. Implement application whitelisting to prevent unauthorized execution
Patching Guidance:
- No official patch is available; upgrade to alternative emulators (ZSNES, Higan, Mesen) or discontinue Snes9K usage
- If upgrade is not feasible, disable Netplay feature entirely
Compensating Controls:
1. Run Snes9K in restricted user accounts without administrative privileges
2. Implement file integrity monitoring on system binaries
3. Deploy SEH exploitation prevention via Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR)
4. Use application sandboxing or virtualization for emulator execution
5. Monitor for suspicious process creation and memory access patterns
Detection Rules:
- Monitor for Snes9K process spawning child processes
- Alert on structured exception handler chain modifications
- Track unusual memory allocation patterns in Snes9K process space
- Monitor clipboard operations feeding into Snes9K Netplay dialog boxes
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد وحصر جميع الأنظمة التي تقوم بتشغيل Snes9K 0.0.9z أو الإصدارات الأقدم
2. تقييد الوصول المحلي للأنظمة المتأثرة وتعطيل وظيفة Netplay إذا لم تكن مطلوبة
3. تنفيذ قائمة بيضاء للتطبيقات لمنع التنفيذ غير المصرح به
إرشادات التصحيح:
- لا يوجد تصحيح رسمي متاح؛ قم بالترقية إلى محاكيات بديلة (ZSNES, Higan, Mesen) أو توقف عن استخدام Snes9K
- إذا لم تكن الترقية ممكنة، قم بتعطيل ميزة Netplay بالكامل
الضوابط التعويضية:
1. قم بتشغيل Snes9K في حسابات مستخدمين مقيدة بدون امتيازات إدارية
2. تنفيذ مراقبة سلامة الملفات على الملفات الثنائية للنظام
3. نشر منع استغلال SEH عبر Data Execution Prevention (DEP) و Address Space Layout Randomization (ASLR)
4. استخدام الحماية بالرمل أو المحاكاة الافتراضية لتنفيذ المحاكي
5. مراقبة إنشاء العمليات المريبة وأنماط الوصول إلى الذاكرة
قواعد الكشف:
- مراقبة عملية Snes9K التي تولد عمليات فرعية
- تنبيهات على تعديلات سلسلة معالج الاستثناءات المنظمة
- تتبع أنماط تخصيص الذاكرة غير العادية في مساحة عملية Snes9K
- مراقبة عمليات الحافظة التي تغذي صناديق حوار Snes9K Netplay
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures
A.5.2.1 - User access management
A.5.2.3 - Management of privileged access rights
A.6.2.1 - Restriction of access to information
A.8.1.1 - User endpoint devices
A.8.2.1 - Installation of software on organizational assets
🔵 SAMA CSF
ID.AM-2 - Software inventory and management
PR.AC-1 - Access control policy and procedures
PR.AC-4 - Access rights and privileges
DE.CM-7 - Monitoring and detection of unauthorized software
RS.MI-2 - Incident response and recovery procedures
🟡 ISO 27001:2022
A.5.1.1 - Policies for information security
A.6.1.1 - Information security roles and responsibilities
A.6.2.1 - Information security awareness and training
A.8.1.1 - User endpoint devices
A.8.2.1 - Installation of software
A.8.3.1 - Management of removable media
A.12.2.1 - Restrictions on software installation
🔗 References & Sources 4
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https://sourceforge.net/projects/snes9k/
disclosure@vulncheck.com
https://sourceforge.net/projects/snes9k/files/latest/download
disclosure@vulncheck.com
https://www.exploit-db.com/exploits/45598
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/snes9k-9z-buffer-overflow-seh-via-netplay-socket
disclosure@vulncheck.com