📄 Description (English)
D-Link DNS-320 Remote Code Execution Vulnerability — The login_mgr.cgi script in D-Link DNS-320 is vulnerable to remote code execution.
🤖 AI Executive Summary
CVE-2019-16057 is a critical remote code execution vulnerability (CVSS 9.0) affecting the D-Link DNS-320 NAS device via its login_mgr.cgi script. An unauthenticated remote attacker can exploit this flaw to execute arbitrary commands on the device without any credentials, potentially gaining full control of the storage system. Active exploits are publicly available, making this an immediate and severe threat. Organizations using D-Link DNS-320 devices for file storage or backup should treat this as an emergency patching priority.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 14, 2026 15:31
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations across multiple sectors are at significant risk due to widespread use of D-Link NAS devices for file sharing and backup. Government entities and SMEs relying on DNS-320 for document storage face data exfiltration risks. Healthcare organizations storing patient records on such devices could face PDPL compliance violations. Energy sector contractors and SME suppliers to ARAMCO using these devices for project file storage are particularly exposed. Banking and financial institutions under SAMA oversight risk unauthorized access to sensitive financial data. The availability of public exploits increases the likelihood of opportunistic attacks targeting Saudi IP ranges, especially given the prevalence of D-Link devices in the Saudi SME and home-office market.
🏢 Affected Saudi Sectors
Government
Banking
Healthcare
Energy
Education
SME/Retail
Telecom
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all D-Link DNS-320 devices on your network using asset inventory tools or network scanning (nmap -p 80,443,8080).
2. Isolate affected devices from internet-facing exposure immediately — place behind firewall with no direct external access.
3. Disable remote management and web interface access from untrusted networks.
PATCHING GUIDANCE:
4. Apply the latest firmware update from D-Link official support portal (firmware version 2.06B01 T or later addresses this vulnerability).
5. Verify firmware integrity using checksums provided by D-Link before flashing.
6. After patching, change all administrative credentials immediately.
COMPENSATING CONTROLS (if patching is delayed):
7. Implement strict ACLs to restrict access to the device management interface to trusted IP addresses only.
8. Deploy a WAF or reverse proxy in front of the device if web access is required.
9. Enable network-level authentication before reaching the device interface.
10. Monitor for unusual outbound connections from NAS devices.
DETECTION RULES:
11. Create IDS/IPS signatures to detect POST requests to /cgi-bin/login_mgr.cgi with anomalous parameters.
12. Monitor for shell command patterns in HTTP request bodies targeting this endpoint.
13. Alert on any new processes spawned by the web server process on the NAS device.
14. Review logs for unauthorized access attempts to login_mgr.cgi.
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة D-Link DNS-320 على شبكتك باستخدام أدوات جرد الأصول أو فحص الشبكة.
2. عزل الأجهزة المتأثرة فوراً عن الإنترنت ووضعها خلف جدار حماية بدون وصول خارجي مباشر.
3. تعطيل الإدارة عن بُعد وواجهة الويب من الشبكات غير الموثوقة.
إرشادات التصحيح:
4. تطبيق آخر تحديث للبرنامج الثابت من بوابة دعم D-Link الرسمية (الإصدار 2.06B01 T أو أحدث).
5. التحقق من سلامة البرنامج الثابت باستخدام المجاميع الاختبارية المقدمة من D-Link قبل التثبيت.
6. بعد التصحيح، تغيير جميع بيانات اعتماد المسؤول فوراً.
ضوابط التعويض (في حالة تأخر التصحيح):
7. تطبيق قوائم التحكم في الوصول لتقييد الوصول إلى واجهة إدارة الجهاز على عناوين IP الموثوقة فقط.
8. نشر جدار حماية تطبيقات الويب أمام الجهاز إذا كان الوصول عبر الويب مطلوباً.
9. تفعيل المصادقة على مستوى الشبكة قبل الوصول إلى واجهة الجهاز.
10. مراقبة الاتصالات الصادرة غير المعتادة من أجهزة NAS.
قواعد الكشف:
11. إنشاء توقيعات IDS/IPS للكشف عن طلبات POST إلى login_mgr.cgi بمعاملات غير طبيعية.
12. مراقبة أنماط أوامر Shell في أجسام طلبات HTTP التي تستهدف هذه النقطة.
13. التنبيه على أي عمليات جديدة تنبثق من عملية خادم الويب على جهاز NAS.
14. مراجعة السجلات لمحاولات الوصول غير المصرح بها إلى login_mgr.cgi.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-4-2: Asset Management — unpatched network storage devices
ECC-2-3-1: Vulnerability Management — critical unpatched CVE with public exploit
ECC-2-5-1: Network Security — exposure of management interfaces
ECC-2-6-1: Patch Management — timely application of security patches
ECC-3-3-3: Remote Access Security — unauthorized remote code execution risk
🔵 SAMA CSF
Cybersecurity Risk Management — 3.3.5: Vulnerability and patch management
Cybersecurity Operations — 4.3.3: Security monitoring and detection
Asset Management — 3.1.2: Hardware asset inventory and control
Third-Party Cybersecurity — 3.7: Vendor device security management
Cybersecurity Resilience — 5.1: Incident response for compromised storage devices
🟡 ISO 27001:2022
A.8.8 — Management of technical vulnerabilities
A.8.20 — Networks security controls for NAS device isolation
A.8.22 — Segregation of networks
A.8.9 — Configuration management of network devices
A.5.30 — ICT readiness for business continuity (data integrity risk)
🟣 PCI DSS v4.0
Requirement 6.3.3 — All system components protected from known vulnerabilities via patching
Requirement 1.3.2 — Restrict inbound and outbound traffic to only necessary communications
Requirement 11.3 — External and internal vulnerability scanning
Requirement 12.3.2 — Targeted risk analysis for storage devices in cardholder data environment
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
D-Link:DNS-320 Storage Device