📄 Description (English)
A vulnerability was found in D-Link DIR-605L 2.13B01. This vulnerability affects the function formAdvNetwork of the file /goform/formAdvNetwork of the component POST Request Handler. Performing a manipulation of the argument curTime results in buffer overflow. Remote exploitation of the attack is possible. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.
🤖 AI Executive Summary
A critical buffer overflow vulnerability (CVE-2026-5982) exists in D-Link DIR-605L 2.13B01 routers affecting the /goform/formAdvNetwork endpoint. The vulnerability allows remote attackers to execute arbitrary code by manipulating the curTime parameter in POST requests. With a CVSS score of 8.8 and public exploit availability, this poses significant risk to organizations still operating legacy D-Link equipment, particularly in Saudi Arabia where these devices remain deployed in small business and government networks.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 15:11
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations operating legacy D-Link DIR-605L routers, particularly in: (1) Small to medium-sized enterprises (SMEs) and government agencies using outdated networking equipment; (2) Telecommunications infrastructure providers (STC, Mobily, Zain) with legacy network segments; (3) Banking sector branch offices and ATM networks still utilizing older router models; (4) Healthcare facilities with legacy network infrastructure; (5) Educational institutions with aging IT infrastructure. The lack of vendor support and patch availability makes remediation extremely challenging for affected Saudi organizations.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Telecommunications
Healthcare
Education
Small and Medium Enterprises (SMEs)
Energy and Utilities
🎯 MITRE ATT&CK Techniques
T1190 - Exploit Public-Facing Application (remote exploitation of /goform/formAdvNetwork)
T1133 - External Remote Services (WAN access to router management)
T1021 - Remote Service Session Initiation (POST request handler exploitation)
T1059 - Command and Scripting Interpreter (arbitrary code execution via buffer overflow)
T1053 - Scheduled Task/Job (potential persistence mechanism post-exploitation)
T1040 - Traffic Sniffing (compromised router can intercept network traffic)
T1557 - Man-in-the-Middle (router compromise enables MITM attacks)
⚖️ Saudi Risk Score (AI)
8.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all D-Link DIR-605L 2.13B01 devices in your network using network scanning tools (Nmap, Shodan queries for Saudi IP ranges)
2. Isolate affected routers from critical network segments and internet-facing positions
3. Implement network segmentation to restrict access to the /goform/formAdvNetwork endpoint
4. Enable logging on all network devices to detect exploitation attempts
COMPENSATING CONTROLS (No patch available):
1. Deploy Web Application Firewall (WAF) rules to block POST requests to /goform/formAdvNetwork with suspicious curTime parameters
2. Implement strict input validation at network perimeter - block requests with oversized curTime values
3. Restrict administrative access to router management interfaces to specific trusted IP addresses only
4. Disable remote management features (disable WAN access to router admin panel)
5. Monitor for exploitation indicators: HTTP 400/500 errors on /goform/formAdvNetwork, unexpected process execution on router
PATCHING STRATEGY:
1. Plan immediate replacement of DIR-605L 2.13B01 devices with supported alternatives (D-Link DIR-X5460, Cisco ASR series, or equivalent)
2. If replacement is not immediately possible, implement air-gapped management access only
3. Establish timeline for complete device replacement within 30-60 days
DETECTION RULES:
1. Monitor for POST requests to /goform/formAdvNetwork with curTime parameter length > 32 bytes
2. Alert on any successful authentication followed by formAdvNetwork access
3. Monitor router process execution for unexpected child processes
4. Track router CPU/memory spikes correlating with formAdvNetwork requests
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة D-Link DIR-605L 2.13B01 في شبكتك باستخدام أدوات المسح (Nmap، استعلامات Shodan للنطاقات السعودية)
2. عزل الأجهزة المتأثرة عن القطاعات الحرجة والمواضع المواجهة للإنترنت
3. تنفيذ تقسيم الشبكة لتقييد الوصول إلى نقطة النهاية /goform/formAdvNetwork
4. تفعيل السجلات على جميع أجهزة الشبكة للكشف عن محاولات الاستغلال
الضوابط التعويضية (لا يوجد تصحيح متاح):
1. نشر قواعد جدار حماية تطبيقات الويب (WAF) لحجب طلبات POST إلى /goform/formAdvNetwork بمعاملات curTime مريبة
2. تنفيذ التحقق الصارم من المدخلات على محيط الشبكة - حجب الطلبات ذات قيم curTime الكبيرة
3. تقييد الوصول الإداري إلى واجهات إدارة الموجهات إلى عناوين IP موثوقة محددة فقط
4. تعطيل ميزات الإدارة البعيدة (تعطيل وصول WAN إلى لوحة إدارة الموجه)
5. مراقبة مؤشرات الاستغلال: أخطاء HTTP 400/500 على /goform/formAdvNetwork، تنفيذ عملية غير متوقع على الموجه
استراتيجية التصحيح:
1. التخطيط للاستبدال الفوري لأجهزة DIR-605L 2.13B01 ببدائل مدعومة (D-Link DIR-X5460، Cisco ASR، أو ما يعادلها)
2. إذا لم يكن الاستبدال ممكناً على الفور، تنفيذ الوصول الإداري المعزول فقط
3. وضع جدول زمني لاستبدال الجهاز الكامل خلال 30-60 يوماً
قواعد الكشف:
1. مراقبة طلبات POST إلى /goform/formAdvNetwork مع طول معامل curTime > 32 بايت
2. تنبيه عند أي مصادقة ناجحة متبوعة بوصول formAdvNetwork
3. مراقبة تنفيذ عملية الموجه للعمليات الفرعية غير المتوقعة
4. تتبع ارتفاعات CPU/الذاكرة في الموجه المرتبطة بطلبات formAdvNetwork
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory Control (legacy device identification)
ECC 2024 A.8.2 - Network Security (network segmentation and access control)
ECC 2024 A.9.1 - Access Control (restrict administrative access)
ECC 2024 A.12.2 - Logging and Monitoring (detection and incident response)
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset Management (identify and track legacy devices)
SAMA CSF PR.AC-1 - Access Control (restrict access to vulnerable endpoints)
SAMA CSF PR.PT-1 - Protection Processes (implement compensating controls)
SAMA CSF DE.CM-1 - Detection and Analysis (monitor for exploitation)
🟡 ISO 27001:2022
ISO 27001:2022 A.5.19 - Inventory of Information and Other Assets
ISO 27001:2022 A.8.1 - User Endpoint Devices (network device management)
ISO 27001:2022 A.8.2 - Privileged Access Rights (restrict admin access)
ISO 27001:2022 A.8.3 - Information Access Restriction (network segmentation)
ISO 27001:2022 A.8.16 - Monitoring Activities (detect exploitation attempts)
🟣 PCI DSS v4.0.1
PCI DSS 1.1 - Firewall Configuration Standards (WAF rules for /goform/formAdvNetwork)
PCI DSS 2.1 - Default Passwords and Security Parameters (disable remote management)
PCI DSS 6.2 - Security Patches (device replacement strategy)
PCI DSS 10.2 - Logging and Monitoring (detect POST requests to vulnerable endpoint)
🔗 References & Sources 5