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Global vulnerability Multiple sectors CRITICAL 29m Global vulnerability Information Technology / Software Infrastructure CRITICAL 31m Global data_breach Healthcare CRITICAL 47m Global data_breach Mobile Technology / Consumer Electronics HIGH 1h Global ransomware Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt Cryptocurrency and Blockchain CRITICAL 1h Global malware Financial Services, Mobile Payments HIGH 2h Global vulnerability Government and Critical Infrastructure CRITICAL 5h Global apt Cryptocurrency and Blockchain CRITICAL 13h Global malware Financial Services / Cryptocurrency CRITICAL 13h Global vulnerability Multiple sectors CRITICAL 29m Global vulnerability Information Technology / Software Infrastructure CRITICAL 31m Global data_breach Healthcare CRITICAL 47m Global data_breach Mobile Technology / Consumer Electronics HIGH 1h Global ransomware Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt Cryptocurrency and Blockchain CRITICAL 1h Global malware Financial Services, Mobile Payments HIGH 2h Global vulnerability Government and Critical Infrastructure CRITICAL 5h Global apt Cryptocurrency and Blockchain CRITICAL 13h Global malware Financial Services / Cryptocurrency CRITICAL 13h Global vulnerability Multiple sectors CRITICAL 29m Global vulnerability Information Technology / Software Infrastructure CRITICAL 31m Global data_breach Healthcare CRITICAL 47m Global data_breach Mobile Technology / Consumer Electronics HIGH 1h Global ransomware Cybersecurity Services / Multiple Sectors CRITICAL 1h Global apt Cryptocurrency and Blockchain CRITICAL 1h Global malware Financial Services, Mobile Payments HIGH 2h Global vulnerability Government and Critical Infrastructure CRITICAL 5h Global apt Cryptocurrency and Blockchain CRITICAL 13h Global malware Financial Services / Cryptocurrency CRITICAL 13h
Vulnerabilities

CVE-2021-45382

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
D-Link Multiple Routers Remote Code Execution Vulnerability — A remote code execution vulnerability exists in all series H/W revisions routers via the DDNS function in ncc2 binary file.
Published: Apr 4, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

D-Link Multiple Routers Remote Code Execution Vulnerability — A remote code execution vulnerability exists in all series H/W revisions routers via the DDNS function in ncc2 binary file.

🤖 AI Executive Summary

A critical remote code execution vulnerability exists in D-Link routers affecting multiple series through the DDNS function in the ncc2 binary. With a CVSS score of 9.0 and publicly available exploits, this poses an immediate threat to organizations across Saudi Arabia relying on D-Link networking equipment. Attackers can execute arbitrary code without authentication, potentially compromising network infrastructure and sensitive data.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 11:21
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses severe risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), telecommunications providers (STC, Mobily), and energy sector (ARAMCO, SEC). D-Link routers are widely deployed in enterprise networks, branch offices, and critical infrastructure. Exploitation could lead to network compromise, data exfiltration, lateral movement to internal systems, and disruption of critical services. Healthcare organizations and financial institutions face heightened risk due to sensitive data exposure.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Telecommunications Energy and Utilities Healthcare Education Retail and E-commerce
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all D-Link routers in your network inventory and document affected models/firmware versions
2. Isolate or restrict network access to affected routers if patching cannot be completed immediately
3. Monitor router logs for suspicious DDNS requests and unauthorized access attempts
4. Change all default credentials on D-Link routers and implement strong authentication

PATCHING GUIDANCE:
1. Download latest firmware patches from D-Link support portal for each affected router model
2. Schedule maintenance windows to apply patches to all affected devices
3. Test patches in non-production environment first
4. Verify successful patch installation by checking firmware version post-update

COMPENSATING CONTROLS (if immediate patching not possible):
1. Disable DDNS functionality if not required for operations
2. Implement network segmentation to restrict access to router management interfaces
3. Deploy WAF/IPS rules to block exploitation attempts targeting DDNS endpoints
4. Restrict router access to trusted IP ranges only
5. Enable router logging and forward logs to SIEM for analysis

DETECTION RULES:
1. Monitor for HTTP POST requests to /ncc2 endpoint with suspicious payloads
2. Alert on unexpected process execution from router ncc2 binary
3. Track failed and successful authentication attempts to router interfaces
4. Monitor for outbound connections from router to external C2 infrastructure
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع أجهزة التوجيه D-Link في جرد الشبكة الخاص بك وقم بتوثيق الطرز والإصدارات المتأثرة
2. عزل أو تقييد الوصول إلى الشبكة لأجهزة التوجيه المتأثرة إذا لم يكن يمكن إكمال التصحيح فوراً
3. راقب سجلات جهاز التوجيه للطلبات المريبة من DDNS ومحاولات الوصول غير المصرح بها
4. غير جميع بيانات الاعتماد الافتراضية على أجهزة التوجيه D-Link وطبق المصادقة القوية

إرشادات التصحيح:
1. قم بتنزيل أحدث تصحيحات البرامج الثابتة من بوابة دعم D-Link لكل نموذج جهاز توجيه متأثر
2. جدول نوافذ الصيانة لتطبيق التصحيحات على جميع الأجهزة المتأثرة
3. اختبر التصحيحات في بيئة غير الإنتاج أولاً
4. تحقق من نجاح تثبيت التصحيح بالتحقق من إصدار البرنامج الثابت بعد التحديث

الضوابط البديلة:
1. عطل وظيفة DDNS إذا لم تكن مطلوبة للعمليات
2. طبق تقسيم الشبكة لتقييد الوصول إلى واجهات إدارة جهاز التوجيه
3. نشر قواعد WAF/IPS لحظر محاولات الاستغلال
4. قيد الوصول إلى جهاز التوجيه على نطاقات IP الموثوقة فقط
5. فعل تسجيل جهاز التوجيه وأرسل السجلات إلى SIEM

قواعد الكشف:
1. راقب طلبات HTTP POST إلى نقطة نهاية /ncc2 مع حمولات مريبة
2. تنبيه عند تنفيذ عملية غير متوقعة من ملف ncc2 الثنائي
3. تتبع محاولات المصادقة الفاشلة والناجحة لواجهات جهاز التوجيه
4. راقب الاتصالات الصادرة من جهاز التوجيه إلى البنية التحتية الخارجية
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory ECC 2024 A.8.2 - Configuration Management ECC 2024 A.12.6 - Vulnerability Management ECC 2024 A.14.2 - System Development and Change Management
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Hardware and Software Assets SAMA CSF PR.IP-3 - Configuration Management SAMA CSF PR.MA-2 - Vulnerability Management SAMA CSF DE.CM-8 - Malware Detection
🟡 ISO 27001:2022
ISO 27001:2022 A.5.19 - Vulnerability Management ISO 27001:2022 A.8.1 - Asset Management ISO 27001:2022 A.8.2 - Configuration Management ISO 27001:2022 A.14.2 - System Development and Change Management
🟣 PCI DSS v4.0
PCI DSS 6.2 - Security Patches and Updates PCI DSS 11.2 - Vulnerability Scanning
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
D-Link:Multiple Routers
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS94.23%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-04-25
Published 2022-04-04
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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