📄 Description (English)
Amcrest Cameras and NVR Stack-based Buffer Overflow Vulnerability — Amcrest cameras and NVR contain a stack-based buffer overflow vulnerability through port 37777 that allows an unauthenticated, remote attacker to crash the device and possibly execute code.
🤖 AI Executive Summary
CVE-2020-5735 is a critical stack-based buffer overflow vulnerability in Amcrest cameras and NVR devices accessible via port 37777, allowing unauthenticated remote attackers to crash devices or execute arbitrary code. With a CVSS score of 9.0 and publicly available exploits, this poses an immediate threat to surveillance infrastructure across Saudi organizations. Patching is urgent as affected devices are commonly deployed in banking, government, and critical infrastructure facilities.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 11:49
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses severe risk to Saudi critical infrastructure sectors: (1) Banking & Financial Services (SAMA-regulated) — surveillance systems in branches and data centers; (2) Government & Defense (NCA oversight) — security monitoring in federal facilities; (3) Energy Sector (ARAMCO, SEC) — surveillance in oil/gas facilities and power plants; (4) Healthcare — hospital security and patient monitoring systems; (5) Telecommunications (STC, Mobily) — network operations centers and facility monitoring; (6) Transportation & Logistics — port and airport surveillance systems. Unauthenticated remote code execution on surveillance infrastructure could enable facility breaches, data theft, or physical security compromise.
🏢 Affected Saudi Sectors
Banking & Financial Services
Government & Defense
Energy & Utilities
Healthcare
Telecommunications
Transportation & Logistics
Critical Infrastructure
🎯 MITRE ATT&CK Techniques
T1190 — Exploit Public-Facing Application (port 37777 exposure)
T1499 — Endpoint Denial of Service (crash capability)
T1059 — Command and Scripting Interpreter (code execution)
T1021 — Remote Service Session Initiation (unauthenticated access)
T1547 — Boot or Logon Autostart Execution (persistence post-exploitation)
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Amcrest cameras and NVR devices in your network using port scanning (nmap -p 37777 <network>)
2. Isolate affected devices from internet-facing networks immediately
3. Restrict access to port 37777 via firewall rules — allow only authorized management IPs
4. Disable port 37777 if remote access is not required
PATCHING:
5. Check Amcrest security advisories for firmware updates specific to your device model
6. Apply available patches immediately following vendor guidance
7. Test patches in non-production environment first
8. Document patch deployment with timestamps
COMPENSATING CONTROLS (if patch unavailable):
9. Implement network segmentation — place NVR/cameras on isolated VLAN
10. Deploy WAF/IPS rules to detect buffer overflow attempts on port 37777
11. Enable authentication and change default credentials
12. Monitor port 37777 for suspicious connection patterns
DETECTION:
13. IDS/IPS Signature: Monitor for oversized payloads to port 37777
14. Log Analysis: Alert on failed authentication attempts to port 37777
15. Network Monitoring: Baseline normal traffic patterns and alert on anomalies
16. Endpoint Detection: Monitor for unexpected process execution on NVR devices
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع أجهزة كاميرات Amcrest و NVR في شبكتك باستخدام فحص المنافذ (nmap -p 37777 <network>)
2. عزل الأجهزة المتأثرة عن الشبكات المتصلة بالإنترنت فوراً
3. تقييد الوصول إلى المنفذ 37777 عبر قواعد جدار الحماية — السماح فقط بعناوين IP الإدارة المصرح بها
4. تعطيل المنفذ 37777 إذا لم يكن الوصول البعيد مطلوباً
التصحيح:
5. تحقق من استشارات أمان Amcrest للحصول على تحديثات البرامج الثابتة الخاصة بطراز جهازك
6. طبق التصحيحات المتاحة فوراً وفقاً لإرشادات البائع
7. اختبر التصحيحات في بيئة غير الإنتاج أولاً
8. وثق نشر التصحيح مع الطوابع الزمنية
الضوابط البديلة (إذا لم يكن التصحيح متاحاً):
9. تنفيذ تقسيم الشبكة — ضع NVR/الكاميرات على VLAN معزول
10. نشر قواعد WAF/IPS للكشف عن محاولات تجاوز المخزن المؤقت على المنفذ 37777
11. تفعيل المصادقة وتغيير بيانات الاعتماد الافتراضية
12. مراقبة المنفذ 37777 للكشف عن أنماط الاتصال المريبة
الكشف:
13. توقيع IDS/IPS: مراقبة الحمولات الكبيرة إلى المنفذ 37777
14. تحليل السجل: تنبيه محاولات المصادقة الفاشلة إلى المنفذ 37777
15. مراقبة الشبكة: خط أساس أنماط حركة المرور العادية والتنبيه على الشذوذ
16. كشف نقطة النهاية: مراقبة تنفيذ العملية غير المتوقعة على أجهزة NVR
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.6.1 — Access Control (unauthenticated remote access)
ECC 2024 A.12.2 — Malware Protection (code execution risk)
ECC 2024 A.12.6 — Management of Technical Vulnerabilities
ECC 2024 A.13.1 — Network Security (port 37777 exposure)
🔵 SAMA CSF
SAMA CSF ID.BE-1 — Asset Management (surveillance infrastructure inventory)
SAMA CSF PR.AC-1 — Access Control (unauthenticated access)
SAMA CSF PR.PT-1 — Protection Processes (vulnerability management)
SAMA CSF DE.CM-1 — Detection & Analysis (anomaly detection)
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 — Access Control (authentication)
ISO 27001:2022 A.8.1 — Cryptography (secure communications)
ISO 27001:2022 A.8.2 — Physical & Environmental Security (surveillance systems)
ISO 27001:2022 A.12.2 — Vulnerability Management (patch management)
🟣 PCI DSS v4.0
PCI DSS 6.2 — Security Patches (timely patching requirement)
PCI DSS 1.3 — Firewall Configuration (port 37777 restriction)
PCI DSS 2.1 — Default Credentials (change defaults on NVR)
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Amcrest:Cameras and Network Video Recorder (NVR)