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Vulnerabilities

CVE-2026-20167

High
CWE-284 — Weakness Type
Published: May 6, 2026  ·  Modified: May 13, 2026  ·  Source: NVD
CVSS v3
7.7
🔗 NVD Official
📄 Description (English)

A vulnerability in the web-based management interface of Cisco IoT Field Network Director could allow an authenticated, remote attacker with low privileges to cause a DoS condition on a remotely managed router.

This vulnerability is due to improper error handling. An attacker could exploit this vulnerability by submitting crafted input to the web-based management interface. A successful exploit could allow the attacker to request unauthorized files from a remote router, causing the router to reload and resulting in a DoS condition.

🤖 AI Executive Summary

CVE-2026-20167 is a high-severity vulnerability in Cisco IoT Field Network Director affecting authenticated users with low privileges. The vulnerability allows remote attackers to trigger denial-of-service conditions on managed routers through improper error handling in the web management interface. With no patch currently available and no public exploits, organizations should implement immediate compensating controls and monitoring.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 11, 2026 10:33
🇸🇦 Saudi Arabia Impact Assessment
Saudi telecommunications operators (STC, Mobily, Zain) managing IoT infrastructure and remote network devices face significant risk. Government entities (NCA, CITC) operating critical infrastructure networks using Cisco IoT solutions are vulnerable. Energy sector (ARAMCO, SEC) IoT deployments for industrial control and monitoring systems could experience operational disruptions. Banking sector (SAMA-regulated institutions) using IoT for branch connectivity and remote management face service availability risks. Healthcare organizations managing remote medical devices and facility networks are at risk of operational disruption.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Government (NCA, CITC) Energy (ARAMCO, SEC) Banking (SAMA-regulated institutions) Healthcare Critical Infrastructure
⚖️ Saudi Risk Score (AI)
7.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all Cisco IoT Field Network Director deployments in your environment
2. Restrict web management interface access to trusted IP addresses only using firewall rules
3. Implement network segmentation to isolate IoT management traffic
4. Enable detailed logging and monitoring of all web management interface access attempts
5. Enforce strong authentication (MFA) for all management interface accounts

Monitoring & Detection:
1. Monitor for HTTP POST/GET requests with unusual parameters to the management interface
2. Alert on any 'reload' or 'restart' commands initiated from the management interface
3. Track failed authentication attempts and privilege escalation attempts
4. Monitor router reload events and correlate with management interface access logs
5. Implement IDS/IPS rules to detect crafted input patterns targeting error handling functions

Compensating Controls:
1. Implement rate limiting on management interface endpoints
2. Deploy WAF rules to sanitize input to the management interface
3. Maintain offline backups of router configurations for rapid recovery
4. Establish redundant router deployments to minimize DoS impact
5. Document all authorized management interface users and review access quarterly

Patching Strategy:
1. Subscribe to Cisco security advisories for patch availability
2. Establish testing environment to validate patches before production deployment
3. Plan maintenance windows for patch deployment with stakeholder coordination
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع نشرات Cisco IoT Field Network Director في بيئتك
2. تقييد الوصول إلى واجهة الإدارة على الويب لعناوين IP الموثوقة فقط باستخدام قواعد جدار الحماية
3. تطبيق تقسيم الشبكة لعزل حركة إدارة IoT
4. تفعيل التسجيل والمراقبة التفصيلية لجميع محاولات الوصول إلى واجهة الإدارة
5. فرض المصادقة القوية (MFA) لجميع حسابات واجهة الإدارة

المراقبة والكشف:
1. مراقبة طلبات HTTP POST/GET بمعاملات غير عادية إلى واجهة الإدارة
2. التنبيه على أي أوامر 'إعادة تحميل' أو 'إعادة تشغيل' من واجهة الإدارة
3. تتبع محاولات المصادقة الفاشلة ومحاولات تصعيد الامتيازات
4. مراقبة أحداث إعادة تحميل الموجه والربط مع سجلات الوصول إلى واجهة الإدارة
5. تطبيق قواعد IDS/IPS للكشف عن أنماط الإدخال المصنوعة التي تستهدف وظائف معالجة الأخطاء

الضوابط التعويضية:
1. تطبيق تحديد معدل على نقاط نهاية واجهة الإدارة
2. نشر قواعد WAF لتنظيف الإدخال إلى واجهة الإدارة
3. الحفاظ على نسخ احتياطية غير متصلة من تكوينات الموجه للاسترجاع السريع
4. إنشاء نشرات موجه زائدة لتقليل تأثير DoS
5. توثيق جميع مستخدمي واجهة الإدارة المصرح لهم ومراجعة الوصول ربع سنوياً

استراتيجية التصحيح:
1. الاشتراك في استشارات أمان Cisco لتوفر التصحيحات
2. إنشاء بيئة اختبار للتحقق من صحة التصحيحات قبل نشرها في الإنتاج
3. تخطيط نوافذ الصيانة لنشر التصحيحات مع تنسيق أصحاب المصلحة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1 - Access Control Policies ECC 2024 A.5.2 - User Registration and De-registration ECC 2024 A.5.3 - User Access Rights ECC 2024 A.8.1 - Audit Logging ECC 2024 A.12.4 - Logging and Monitoring ECC 2024 A.13.1 - Information Security Incident Management
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software Inventory SAMA CSF PR.AC-1 - Access Control SAMA CSF PR.AC-4 - Access Rights Management SAMA CSF DE.AE-1 - Anomalies and Events Detection SAMA CSF DE.CM-1 - System Monitoring SAMA CSF RS.AN-1 - Incident Analysis
🟡 ISO 27001:2022
ISO 27001:2022 A.5.3 - Segregation of Duties ISO 27001:2022 A.8.1 - User Endpoint Devices ISO 27001:2022 A.8.2 - Privileged Access Rights ISO 27001:2022 A.8.3 - Information Access Restriction ISO 27001:2022 A.12.4 - Logging ISO 27001:2022 A.12.6 - Management of Technical Vulnerabilities
📊 CVSS Score
7.7
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeC — Changed
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.7
CWECWE-284
EPSS0.11%
Exploit No
Patch ✗ No
Published 2026-05-06
Source Feed nvd
🇸🇦 Saudi Risk Score
7.2
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-284
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