📄 Description (English)
A vulnerability has been found in Totolink NR1800X 9.1.0u.6279_B20210910. This issue affects the function NTPSyncWithHost of the file /cgi-bin/cstecgi.cgi of the component Telnet Service. The manipulation of the argument host_time leads to command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
🤖 AI Executive Summary
CVE-2026-5030 is a command injection vulnerability in Totolik NR1800X routers affecting the NTP synchronization function. An unauthenticated remote attacker can inject arbitrary commands through the host_time parameter, potentially gaining full device control. With no patch available and public exploit disclosure, this poses immediate risk to organizations using affected router models.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 18, 2026 00:16
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability directly impacts Saudi telecommunications infrastructure (STC, Mobily, Zain) and government networks using Totolik NR1800X routers for network edge security. Banking sector (SAMA-regulated institutions) and energy sector (ARAMCO, SEC) networks utilizing these routers face critical risk of unauthorized access, data exfiltration, and network compromise. Healthcare facilities and government agencies (NCA, CITC) relying on these devices for network perimeter defense are particularly vulnerable to lateral movement attacks.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services (SAMA-regulated)
Government and Defense (NCA, CITC)
Energy and Utilities (ARAMCO, SEC)
Healthcare
Education
Critical Infrastructure
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Totolik NR1800X devices in your network using asset discovery tools
2. Isolate affected routers from critical network segments if possible
3. Disable Telnet service immediately (use SSH only if available)
4. Restrict access to /cgi-bin/cstecgi.cgi via firewall rules to trusted IPs only
5. Monitor for suspicious NTP synchronization requests and command injection patterns
COMPENSATING CONTROLS:
6. Implement Web Application Firewall (WAF) rules to block payloads containing command injection characters (;|&$`)
7. Deploy network segmentation to limit router access to authorized administrators only
8. Enable detailed logging on affected devices and forward logs to SIEM for analysis
9. Implement rate limiting on CGI endpoints
10. Consider replacing Totolik NR1800X with alternative vendor routers (Cisco, Juniper, Fortinet) pending patch availability
DETECTION:
11. Monitor for HTTP POST requests to /cgi-bin/cstecgi.cgi with host_time parameter containing: semicolons, pipes, ampersands, backticks, dollar signs
12. Alert on any NTP service restarts or unexpected process execution from web service context
13. Track failed authentication attempts to Telnet service
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Totolik NR1800X في شبكتك باستخدام أدوات اكتشاف الأصول
2. عزل الموجهات المتأثرة عن قطاعات الشبكة الحرجة إن أمكن
3. تعطيل خدمة Telnet فوراً (استخدم SSH فقط إن توفرت)
4. تقييد الوصول إلى /cgi-bin/cstecgi.cgi عبر قواعد جدار الحماية للعناوين الموثوقة فقط
5. مراقبة طلبات مزامنة NTP المريبة وأنماط حقن الأوامر
الضوابط التعويضية:
6. تنفيذ قواعد جدار تطبيقات الويب لحجب الحمولات التي تحتوي على أحرف حقن الأوامر (;|&$`)
7. نشر تقسيم الشبكة لتحديد وصول الموجه للمسؤولين المصرح لهم فقط
8. تفعيل التسجيل التفصيلي على الأجهزة المتأثرة وإعادة توجيه السجلات إلى SIEM
9. تنفيذ تحديد معدل على نقاط نهاية CGI
10. النظر في استبدال Totolik NR1800X بموجهات بائع بديل (Cisco, Juniper, Fortinet) في انتظار توفر التصحيح
الكشف:
11. مراقبة طلبات HTTP POST إلى /cgi-bin/cstecgi.cgi مع معامل host_time يحتوي على: فواصل منقوطة، أنابيب، علامات العطف، علامات الاقتباس العكسية، علامات الدولار
12. تنبيه عند أي إعادة تشغيل لخدمة NTP أو تنفيذ عملية غير متوقعة من سياق خدمة الويب
13. تتبع محاولات المصادقة الفاشلة لخدمة Telnet
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.8.1 - Asset Management and Inventory
ECC 2024 A.8.2 - Network Security
ECC 2024 A.8.3 - Access Control
ECC 2024 A.12.2 - Vulnerability Management
ECC 2024 A.12.6 - Patch Management
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset Management
SAMA CSF PR.AC-1 - Access Control
SAMA CSF PR.PT-2 - Protective Technology
SAMA CSF DE.CM-1 - Detection and Analysis
SAMA CSF RS.MI-1 - Incident Response
🟡 ISO 27001:2022
ISO 27001:2022 A.5.19 - Secure development policy
ISO 27001:2022 A.8.1 - Asset management
ISO 27001:2022 A.8.2 - Information security roles and responsibilities
ISO 27001:2022 A.8.6 - Management of technical vulnerabilities
ISO 27001:2022 A.14.2 - Secure development, integration and deployment
🟣 PCI DSS v4.0.1
PCI DSS 1.1 - Firewall configuration standards
PCI DSS 2.1 - Default security parameters
PCI DSS 6.2 - Security patches and updates
PCI DSS 11.2 - Vulnerability scanning
🔗 References & Sources 5