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Vulnerabilities

CVE-2026-0403

High
An insufficient input validation vulnerability in NETGEAR Orbi routers allows attackers connected to the router's LAN to execute OS command injections.
CWE-20 — Weakness Type
Published: Jan 13, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
8.0
🔗 NVD Official
📄 Description (English)

An insufficient input validation vulnerability in NETGEAR Orbi routers
allows attackers connected to the router's LAN to execute OS command
injections.

🤖 AI Executive Summary

A critical input validation vulnerability in NETGEAR Orbi mesh routers (CVE-2026-0403) enables authenticated LAN attackers to execute arbitrary OS commands with router privileges. With CVSS 8.0 and widespread deployment across Saudi enterprises and residences, this poses significant risk to network integrity and data confidentiality. Immediate patching is essential as the vulnerability affects 10 router models across multiple firmware versions.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 26, 2026 16:03
🇸🇦 Saudi Arabia Impact Assessment
High impact across multiple Saudi sectors: (1) Banking/SAMA-regulated institutions using Orbi for branch/office networks risk unauthorized access to financial systems and customer data; (2) Government agencies (NCA, CITC) face potential network compromise and classified data exposure; (3) Healthcare facilities (MOH, private hospitals) could experience patient data breaches and service disruption; (4) Energy sector (ARAMCO, utilities) risks operational technology network infiltration; (5) Telecom providers (STC, Mobily, Zain) face backbone network vulnerabilities; (6) Large enterprises and SMEs using Orbi mesh systems for corporate networks are at direct risk. The LAN-only requirement limits external exploitation but insider threats and compromised employee devices pose significant risk.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Facilities Energy and Utilities Telecommunications Manufacturing and Industrial Retail and E-commerce Education and Universities Real Estate and Construction Professional Services
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all NETGEAR Orbi devices in your network (RBE971, RBE970, RBR750, RBR850, RBR860, RBS750, RBS850, RBS860, RBRE960, RBSE960)
2. Restrict LAN access to trusted devices only; disable guest networks temporarily
3. Change router admin credentials to complex passwords (minimum 16 characters)
4. Disable remote management features if enabled

PATCHING GUIDANCE:
1. Check NETGEAR support portal for latest firmware versions for your specific model
2. Download firmware directly from NETGEAR official website (not third-party sources)
3. Apply patches during maintenance windows; backup router configuration first
4. Verify firmware version post-update via router admin interface
5. Test network connectivity and critical services after patching

COMPENSATING CONTROLS (if patching delayed):
1. Implement network segmentation: isolate router management interfaces on separate VLAN
2. Deploy network access control (NAC) to restrict LAN device connections
3. Monitor router logs for suspicious command patterns (grep for shell metacharacters: |, ;, &, $, `, etc.)
4. Implement firewall rules blocking internal access to router management ports (80, 443, 22)
5. Deploy IDS/IPS signatures detecting OS command injection attempts

DETECTION RULES:
1. Monitor router access logs for POST requests to configuration endpoints with special characters
2. Alert on multiple failed authentication attempts followed by successful access
3. Track firmware version changes and unauthorized configuration modifications
4. Detect outbound connections from router to external command-and-control servers
5. Monitor for unusual process execution on router (via SSH/Telnet if available)
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع أجهزة NETGEAR Orbi في شبكتك (RBE971, RBE970, RBR750, RBR850, RBR860, RBS750, RBS850, RBS860, RBRE960, RBSE960)
2. قيّد الوصول إلى الشبكة المحلية للأجهزة الموثوقة فقط؛ عطّل الشبكات الضيف مؤقتاً
3. غيّر بيانات اعتماد مسؤول الموجه إلى كلمات مرور معقدة (16 حرفاً على الأقل)
4. عطّل ميزات الإدارة البعيدة إن كانت مفعلة

إرشادات التصحيح:
1. تحقق من بوابة دعم NETGEAR للحصول على أحدث إصدارات البرامج الثابتة لطرازك المحدد
2. حمّل البرامج الثابتة مباشرة من موقع NETGEAR الرسمي (وليس من مصادر تابعة لجهات خارجية)
3. طبّق التصحيحات خلال نوافذ الصيانة؛ احفظ نسخة احتياطية من إعدادات الموجه أولاً
4. تحقق من إصدار البرامج الثابتة بعد التحديث عبر واجهة إدارة الموجه
5. اختبر اتصال الشبكة والخدمات الحرجة بعد التصحيح

الضوابط البديلة (إذا تأخر التصحيح):
1. طبّق تقسيم الشبكة: عزل واجهات إدارة الموجه على VLAN منفصل
2. نشّر التحكم في الوصول إلى الشبكة (NAC) لتقييد اتصالات أجهزة الشبكة المحلية
3. راقب سجلات الموجه للأنماط المريبة (ابحث عن أحرف الأوامر: |، ;، &، $، `، إلخ)
4. طبّق قواعد جدار الحماية لحظر الوصول الداخلي إلى منافذ إدارة الموجه (80، 443، 22)
5. نشّر توقيعات IDS/IPS للكشف عن محاولات حقن أوامر نظام التشغيل

قواعد الكشف:
1. راقب سجلات الوصول إلى الموجه لطلبات POST إلى نقاط نهاية التكوين بأحرف خاصة
2. أصدر تنبيهات لمحاولات المصادقة الفاشلة المتعددة متبوعة بالوصول الناجح
3. تتبع تغييرات إصدار البرامج الثابتة والتعديلات غير المصرح بها على التكوين
4. كشف الاتصالات الصادرة من الموجه إلى خوادم التحكم والقيادة الخارجية
5. راقب تنفيذ العمليات غير العادية على الموجه (عبر SSH/Telnet إن أمكن)
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Network access control and authentication ECC 2024 A.5.2.1 - User access management ECC 2024 A.6.1.1 - Information security policies and procedures ECC 2024 A.8.1.1 - Asset management and inventory ECC 2024 A.12.2.1 - Change management procedures ECC 2024 A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Hardware and software assets are catalogued SAMA CSF PR.AC-1 - Identities and credentials are issued and managed SAMA CSF PR.DS-6 - Integrity checking mechanisms are used to verify software SAMA CSF DE.CM-8 - Malicious code is detected SAMA CSF RS.MI-2 - Incidents are mitigated
🟡 ISO 27001:2022
ISO 27001:2022 A.5.16 - Management of information security incidents ISO 27001:2022 A.5.23 - Information security for supplier relationships ISO 27001:2022 A.8.1 - Screening ISO 27001:2022 A.8.2 - Terms and conditions of employment ISO 27001:2022 A.8.3 - Information security awareness, education and training ISO 27001:2022 A.12.6 - Management of technical vulnerabilities
🟣 PCI DSS v4.0.1
PCI DSS 1.1 - Firewall configuration standards PCI DSS 2.1 - Default security parameters PCI DSS 2.2.4 - Configure system security parameters PCI DSS 6.2 - Security patches and updates PCI DSS 11.2 - Vulnerability scanning
📦 Affected Products / CPE 10 entries
netgear:rbe971_firmware
netgear:rbe970_firmware
netgear:rbr750_firmware
netgear:rbr850_firmware
netgear:rbr860_firmware
netgear:rbs750_firmware
netgear:rbs850_firmware
netgear:rbs860_firmware
netgear:rbre960_firmware
netgear:rbse960_firmware
📊 CVSS Score
8.0
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorA — Adjacent
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score8.0
CWECWE-20
EPSS0.08%
Exploit No
Patch ✓ Yes
Published 2026-01-13
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
patch-available CWE-20
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