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Vulnerabilities

CVE-2026-20210

Medium
CWE-779 — Weakness Type
Published: May 14, 2026  ·  Modified: May 17, 2026  ·  Source: NVD
CVSS v3
5.4
🔗 NVD Official
📄 Description (English)

A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system.

This vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. A successful exploit could allow the attacker to access or modify configuration settings within Cisco Catalyst SD-WAN Manager as a high-privileged user.

🤖 AI Executive Summary

CVE-2026-20210 is a privilege escalation vulnerability in Cisco Catalyst SD-WAN Manager affecting authenticated users with read-only permissions. The vulnerability allows attackers to elevate privileges and modify configurations by exploiting improper redaction of sensitive information. With no patch currently available and a CVSS score of 5.4, this poses a moderate but significant risk to organizations managing SD-WAN infrastructure, particularly in critical sectors like banking and energy.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 26, 2026 14:59
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations operating Cisco Catalyst SD-WAN Manager face significant risk, particularly: (1) Banking sector (SAMA-regulated institutions) managing critical network infrastructure for inter-branch connectivity; (2) Energy sector (ARAMCO and downstream operators) relying on SD-WAN for operational technology networks; (3) Government agencies (NCA oversight) using SD-WAN for secure communications; (4) Telecom operators (STC, Mobily) managing customer-facing SD-WAN services. The privilege escalation capability enables unauthorized configuration changes affecting network segmentation, access controls, and data routing—critical for financial transactions and critical infrastructure.
🏢 Affected Saudi Sectors
Banking and Financial Services Energy and Utilities Government and Public Administration Telecommunications Healthcare Critical Infrastructure
⚖️ Saudi Risk Score (AI)
6.8
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Audit all user accounts with read-only access to Cisco Catalyst SD-WAN Manager; document privilege levels and access patterns
2. Implement enhanced monitoring on configuration change logs; alert on any modifications initiated by read-only accounts
3. Restrict network access to SD-WAN Manager UI to trusted administrative networks only; implement IP whitelisting
4. Review and strengthen authentication mechanisms; enforce multi-factor authentication (MFA) for all SD-WAN Manager access
5. Disable read-only accounts not actively required; apply principle of least privilege

Compensating Controls:
6. Implement network segmentation isolating SD-WAN Manager from general user networks
7. Deploy Web Application Firewall (WAF) rules to detect privilege escalation attempts
8. Enable detailed audit logging for all configuration changes; forward logs to SIEM for analysis
9. Conduct regular access reviews (weekly) until patch is available
10. Monitor Cisco security advisories for patch availability; prepare change management procedures for rapid deployment

Detection Rules:
- Alert on configuration modifications from accounts with read-only role designation
- Monitor for unusual API calls from read-only user sessions
- Track failed privilege elevation attempts in authentication logs
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تدقيق جميع حسابات المستخدمين ذات الوصول للقراءة فقط إلى مدير Cisco Catalyst SD-WAN؛ توثيق مستويات الامتيازات وأنماط الوصول
2. تنفيذ مراقبة محسّنة على سجلات تغيير الإعدادات؛ تنبيهات على أي تعديلات يبدأها حسابات القراءة فقط
3. تقييد الوصول إلى واجهة مدير SD-WAN إلى الشبكات الإدارية الموثوقة فقط؛ تنفيذ قائمة بيضاء للعناوين
4. مراجعة وتعزيز آليات المصادقة؛ فرض المصادقة متعددة العوامل (MFA) لجميع الوصول
5. تعطيل الحسابات ذات الوصول للقراءة فقط غير المطلوبة بنشاط؛ تطبيق مبدأ أقل امتياز

الضوابط البديلة:
6. تنفيذ تقسيم الشبكة لعزل مدير SD-WAN عن شبكات المستخدمين العامة
7. نشر قواعد جدار حماية تطبيقات الويب (WAF) للكشف عن محاولات تصعيد الامتيازات
8. تفعيل تسجيل التدقيق التفصيلي لجميع تغييرات الإعدادات؛ إرسال السجلات إلى SIEM
9. إجراء مراجعات وصول منتظمة (أسبوعياً) حتى توفر التصحيح
10. مراقبة استشارات أمان Cisco لتوفر التصحيح؛ تحضير إجراءات إدارة التغيير للنشر السريع

قواعد الكشف:
- تنبيهات على تعديلات الإعدادات من حسابات بدور القراءة فقط
- مراقبة استدعاءات API غير العادية من جلسات المستخدمين ذات القراءة فقط
- تتبع محاولات تصعيد الامتيازات الفاشلة في سجلات المصادقة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.9.2.1 - User access management and privilege control ECC 2024 A.8.2.3 - Access control to information systems ECC 2024 A.12.4.1 - Event logging and monitoring ECC 2024 A.12.4.3 - Protection of log information
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software, hardware, and firmware inventory SAMA CSF PR.AC-1 - Identities and credentials are managed SAMA CSF PR.AC-4 - Access rights are managed SAMA CSF DE.CM-1 - The network is monitored for unauthorized connections
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access control ISO 27001:2022 A.8.2 - User access management ISO 27001:2022 A.8.3 - User responsibilities ISO 27001:2022 A.12.4 - Logging
🟣 PCI DSS v4.0.1
PCI DSS 7.1 - Restrict access to system components by business need to know PCI DSS 8.2 - Ensure proper user identification and authentication PCI DSS 10.2 - Implement automated audit trails for all system components
📊 CVSS Score
5.4
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityL — Low / Local
IntegrityL — Low / Local
AvailabilityN — None / Network
📋 Quick Facts
Severity Medium
CVSS Score5.4
CWECWE-779
EPSS0.03%
Exploit No
Patch ✗ No
Published 2026-05-14
Source Feed nvd
🇸🇦 Saudi Risk Score
6.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-779
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