📄 Description (English)
A vulnerability in the web-based management interface of Cisco Evolved Programmable Network Manager (EPNM) could allow an authenticated, remote attacker with low privileges to access sensitive information that they are not authorized to access.
This vulnerability is due to improper authorization checks on a REST API endpoint of an affected device. An attacker could exploit this vulnerability by querying the affected endpoint. A successful exploit could allow the attacker to view session information of active Cisco EPNM users, including users with administrative privileges, which could result in the affected device being compromised.
🤖 AI Executive Summary
CVE-2026-20155 is a high-severity authorization bypass vulnerability in Cisco EPNM's REST API that allows authenticated users with low privileges to access sensitive session information of administrative users. With a CVSS score of 8.0 and no patch currently available, this poses an immediate risk to organizations managing network infrastructure through EPNM. Successful exploitation could lead to privilege escalation and complete compromise of network management systems.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 26, 2026 18:19
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi telecommunications operators (STC, Mobily, Zain), government agencies managing critical infrastructure through EPNM, and financial institutions relying on Cisco network management. The energy sector (ARAMCO, SEC) and healthcare organizations using EPNM for network operations are particularly vulnerable. The lack of available patches makes this an immediate concern for SAMA-regulated financial institutions and NCA-supervised government networks. Session hijacking of administrative accounts could lead to unauthorized access to critical network infrastructure and sensitive data exfiltration.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain)
Banking and Financial Services (SAMA-regulated)
Government and Critical Infrastructure (NCA-supervised)
Energy (ARAMCO, SEC)
Healthcare
Defense and Security
🎯 MITRE ATT&CK Techniques
T1078 — Valid Accounts (exploitation using authenticated low-privilege accounts)
T1526 — Reconnaissance (querying API endpoints for sensitive information)
T1087 — Account Discovery (enumerating administrative user sessions)
T1550 — Use Alternate Authentication Material (session hijacking potential)
T1021 — Remote Services (lateral movement via compromised admin sessions)
T1040 — Network Sniffing (potential session data interception)
⚖️ Saudi Risk Score (AI)
8.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all Cisco EPNM deployments across your organization and document version numbers
2. Restrict REST API access to EPNM management interfaces using network segmentation and firewall rules
3. Implement strict access controls limiting API endpoint access to authorized administrative users only
4. Enable comprehensive logging and monitoring of all REST API calls to EPNM endpoints
5. Review and revoke unnecessary user accounts with API access privileges
COMPENSATING CONTROLS (until patch available):
6. Deploy Web Application Firewall (WAF) rules to monitor and block suspicious REST API queries
7. Implement IP whitelisting for EPNM API access from known management stations
8. Use VPN/bastion hosts for all EPNM management access
9. Enforce multi-factor authentication for all EPNM user accounts
10. Implement session timeout policies (15-30 minutes maximum)
DETECTION RULES:
11. Monitor for unauthorized REST API endpoint queries, particularly those accessing /api/v1/session or similar endpoints
12. Alert on session information queries from non-administrative accounts
13. Track failed authorization attempts on protected API endpoints
14. Monitor for unusual API access patterns or bulk data extraction attempts
PATCHING:
15. Subscribe to Cisco security advisories for patch availability
16. Prepare change management procedures for immediate deployment once patches are released
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع نشرات Cisco EPNM في مؤسستك وتوثيق أرقام الإصدارات
2. قيد الوصول إلى واجهة REST API لواجهات إدارة EPNM باستخدام تقسيم الشبكة وقواعد جدار الحماية
3. طبق ضوابط وصول صارمة تحد من وصول نقاط نهاية API للمستخدمين الإداريين المصرح لهم فقط
4. فعّل التسجيل الشامل ومراقبة جميع استدعاءات REST API إلى نقاط نهاية EPNM
5. راجع وألغِ حسابات المستخدمين غير الضرورية التي تتمتع بامتيازات وصول API
الضوابط البديلة (حتى توفر التصحيح):
6. نشر قواعد جدار تطبيقات الويب (WAF) لمراقبة وحجب استعلامات REST API المريبة
7. طبق قائمة بيضاء للعناوين IP لوصول EPNM API من محطات الإدارة المعروفة
8. استخدم VPN أو خوادم bastion لجميع وصول إدارة EPNM
9. فرض المصادقة متعددة العوامل لجميع حسابات مستخدمي EPNM
10. طبق سياسات انتهاء الجلسة (الحد الأقصى 15-30 دقيقة)
قواعد الكشف:
11. راقب استعلامات نقاط نهاية REST API غير المصرح بها، خاصة تلك التي تصل إلى /api/v1/session أو نقاط نهاية مماثلة
12. أصدر تنبيهات عند الاستعلام عن معلومات الجلسة من حسابات غير إدارية
13. تتبع محاولات الفشل في التفويض على نقاط نهاية API المحمية
14. راقب أنماط وصول API غير العادية أو محاولات استخراج البيانات بكميات كبيرة
التصحيح:
15. اشترك في تنبيهات أمان Cisco لتوفر التصحيحات
16. جهز إجراءات إدارة التغيير للنشر الفوري بمجرد إصدار التصحيحات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 - 5.1.1: Access Control and Authentication
ECC 2024 - 5.1.2: Authorization and Access Rights Management
ECC 2024 - 5.2.1: Logging and Monitoring
ECC 2024 - 5.3.1: Vulnerability Management
🔵 SAMA CSF
SAMA CSF - Governance: Risk Management and Compliance
SAMA CSF - Protect: Access Control
SAMA CSF - Detect: Monitoring and Detection
SAMA CSF - Respond: Incident Response Procedures
🟡 ISO 27001:2022
ISO 27001:2022 - A.5.2: User Access Management
ISO 27001:2022 - A.5.3: Access Control
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
🟣 PCI DSS v4.0.1
PCI DSS 3.2.1: Strong Access Control Measures
PCI DSS 7.1: Limit Access to System Components
PCI DSS 10.2: Implement Automated Audit Trails