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Vulnerabilities

CVE-2016-20037

High
xwpe 1.5.30a-2.1 and prior contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying overly long input strings that exceed buffer boundari
CWE-787 — Weakness Type
Published: Mar 28, 2026  ·  Modified: Apr 4, 2026  ·  Source: NVD
CVSS v3
8.4
🔗 NVD Official
📄 Description (English)

xwpe 1.5.30a-2.1 and prior contains a stack-based buffer overflow vulnerability that allows local attackers to execute arbitrary code by supplying overly long input strings that exceed buffer boundaries. Attackers can craft malicious command-line arguments with 262 bytes of junk data followed by shellcode to overwrite the instruction pointer and achieve code execution or denial of service.

🤖 AI Executive Summary

CVE-2016-20037 is a stack-based buffer overflow in xwpe 1.5.30a-2.1 and earlier versions that allows local attackers to execute arbitrary code through maliciously crafted command-line arguments. With a CVSS score of 8.4, this vulnerability poses a significant risk to systems where xwpe is installed, particularly in development environments. While no public exploit is currently available, the vulnerability requires only local access and can lead to complete system compromise or denial of service.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 24, 2026 04:52
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily affects Saudi organizations in the technology and software development sectors, including government IT departments, telecommunications companies (STC), and financial institutions that utilize xwpe for development purposes. The risk is elevated in environments where developers have local system access and where privilege escalation could lead to unauthorized access to sensitive systems. Government agencies under NCA oversight and SAMA-regulated financial institutions face moderate risk if xwpe is present in development or testing environments. The vulnerability's local-only nature limits exposure in typical production environments but poses significant risk in development labs and testing facilities.
🏢 Affected Saudi Sectors
Software Development Government IT Telecommunications Financial Services Higher Education Research Institutions
⚖️ Saudi Risk Score (AI)
6.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all systems with xwpe 1.5.30a-2.1 or earlier versions installed using: dpkg -l | grep xwpe (Linux) or equivalent package managers
2. Restrict local access to systems running vulnerable xwpe versions through access control lists and user privilege management
3. Disable xwpe if not actively required for development purposes

Patching Guidance:
1. No official patch is available; upgrade to xwpe 1.5.30a-2.2 or later if available from upstream maintainers
2. Monitor xwpe project repositories for security updates
3. Consider migrating to alternative text editors (vim, nano, emacs) that do not have this vulnerability

Compensating Controls:
1. Implement strict user access controls limiting who can execute xwpe
2. Deploy application whitelisting to prevent unauthorized execution
3. Use SELinux or AppArmor to restrict xwpe process capabilities
4. Monitor command-line arguments passed to xwpe for suspicious patterns (>262 byte arguments)
5. Implement file integrity monitoring on critical system binaries

Detection Rules:
1. Monitor for xwpe process execution with unusually long command-line arguments (>500 bytes)
2. Alert on xwpe crashes or segmentation faults indicating exploitation attempts
3. Track unauthorized privilege escalation attempts following xwpe execution
4. Monitor system logs for stack overflow or memory corruption errors related to xwpe
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تحتوي على xwpe 1.5.30a-2.1 أو إصدارات أقدم باستخدام: dpkg -l | grep xwpe (Linux) أو مديري الحزم المكافئين
2. تقييد الوصول المحلي للأنظمة التي تقوم بتشغيل إصدارات xwpe الضعيفة من خلال قوائم التحكم في الوصول وإدارة امتيازات المستخدم
3. تعطيل xwpe إذا لم يكن مطلوباً بنشاط لأغراض التطوير

إرشادات التصحيح:
1. لا يوجد تصحيح رسمي متاح؛ قم بالترقية إلى xwpe 1.5.30a-2.2 أو إصدار أحدث إن أمكن من مشرفي المشروع الأصليين
2. مراقبة مستودعات مشروع xwpe للحصول على تحديثات الأمان
3. النظر في الهجرة إلى محررات نصوص بديلة (vim, nano, emacs) التي لا تحتوي على هذه الثغرة

الضوابط التعويضية:
1. تنفيذ ضوابط وصول صارمة للمستخدمين تقتصر على من يمكنه تنفيذ xwpe
2. نشر قائمة بيضاء للتطبيقات لمنع التنفيذ غير المصرح به
3. استخدام SELinux أو AppArmor لتقييد قدرات عملية xwpe
4. مراقبة وسائط سطر الأوامر التي يتم تمريرها إلى xwpe للبحث عن أنماط مريبة (وسائط >262 بايت)
5. تنفيذ مراقبة سلامة الملفات على الملفات الثنائية الحرجة للنظام

قواعد الكشف:
1. مراقبة تنفيذ عملية xwpe مع وسائط سطر أوامر طويلة بشكل غير عادي (>500 بايت)
2. التنبيه على أعطال xwpe أو أخطاء الانقسام التي تشير إلى محاولات الاستغلال
3. تتبع محاولات تصعيد الامتيازات غير المصرح بها بعد تنفيذ xwpe
4. مراقبة سجلات النظام للبحث عن أخطاء تجاوز المخزن المؤقت أو الذاكرة المرتبطة بـ xwpe
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policies ECC 2024 A.6.1.1 - Information Security Roles and Responsibilities ECC 2024 A.8.1.1 - Asset Management ECC 2024 A.12.2.1 - Restrictions on Software Installation ECC 2024 A.12.6.1 - Management of Technical Vulnerabilities
🔵 SAMA CSF
SAMA CSF ID.GV-1 - Organizational Context and Governance SAMA CSF PR.IP-1 - Information Protection Processes and Procedures SAMA CSF PR.IP-12 - Software, Firmware, and Information Integrity SAMA CSF DE.CM-8 - Vulnerability Scans
🟡 ISO 27001:2022
ISO 27001:2022 A.5.1 - Policies for Information Security ISO 27001:2022 A.6.1 - Organization of Information Security ISO 27001:2022 A.8.1 - Asset Management ISO 27001:2022 A.12.2 - Software and Information Installation ISO 27001:2022 A.12.6 - Management of Technical Vulnerabilities and Exposures
📊 CVSS Score
8.4
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score8.4
CWECWE-787
EPSS0.02%
Exploit No
Patch ✗ No
Published 2026-03-28
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
6.2
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-787
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