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Global data_breach Multiple sectors HIGH 55m Global vulnerability Government and Critical Infrastructure CRITICAL 1h Global vulnerability Multiple sectors CRITICAL 1h Global apt Financial Services, Government HIGH 1h Global insider Cross-sector CRITICAL 2h Global vulnerability Multiple sectors CRITICAL 2h Global vulnerability Information Technology / Software Infrastructure CRITICAL 2h Global data_breach Healthcare CRITICAL 2h Global malware Financial Services HIGH 2h Global vulnerability Technology/Software Development HIGH 3h Global data_breach Multiple sectors HIGH 55m Global vulnerability Government and Critical Infrastructure CRITICAL 1h Global vulnerability Multiple sectors CRITICAL 1h Global apt Financial Services, Government HIGH 1h Global insider Cross-sector CRITICAL 2h Global vulnerability Multiple sectors CRITICAL 2h Global vulnerability Information Technology / Software Infrastructure CRITICAL 2h Global data_breach Healthcare CRITICAL 2h Global malware Financial Services HIGH 2h Global vulnerability Technology/Software Development HIGH 3h Global data_breach Multiple sectors HIGH 55m Global vulnerability Government and Critical Infrastructure CRITICAL 1h Global vulnerability Multiple sectors CRITICAL 1h Global apt Financial Services, Government HIGH 1h Global insider Cross-sector CRITICAL 2h Global vulnerability Multiple sectors CRITICAL 2h Global vulnerability Information Technology / Software Infrastructure CRITICAL 2h Global data_breach Healthcare CRITICAL 2h Global malware Financial Services HIGH 2h Global vulnerability Technology/Software Development HIGH 3h
Vulnerabilities

CVE-2020-3161

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability — Cisco IP Phones contain an improper input validation vulnerability for HTTP requests. Exploitation could allow an
Published: Nov 3, 2021  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability — Cisco IP Phones contain an improper input validation vulnerability for HTTP requests. Exploitation could allow an attacker to execute code remotely with root privileges or cause a denial-of-service (DoS) condition.

🤖 AI Executive Summary

CVE-2020-3161 is a critical remote code execution vulnerability in Cisco IP Phones affecting the web server component. An attacker can exploit improper input validation in HTTP requests to execute arbitrary code with root privileges or trigger denial-of-service conditions. With a CVSS score of 9.0 and publicly available exploits, this vulnerability poses an immediate threat to organizations relying on Cisco IP telephony infrastructure.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 09:37
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability critically impacts Saudi organizations across multiple sectors: Banking sector (SAMA-regulated institutions) relying on Cisco IP Phones for secure communications face potential compromise of confidential financial discussions and customer data. Government agencies (NCA oversight) using Cisco telephony infrastructure are at risk of espionage and operational disruption. Healthcare organizations (MOH facilities) could experience service disruption affecting patient care coordination. Telecommunications providers (STC, Mobily) operating Cisco-based PBX systems face network-wide compromise. Energy sector (ARAMCO, SEC) critical communications systems are vulnerable. The ability to execute code with root privileges enables complete system takeover, data exfiltration, and lateral movement within organizational networks.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare Energy and Utilities Telecommunications Large Enterprises
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Cisco IP Phones in your environment and document affected models and firmware versions
2. Isolate vulnerable IP Phones from production networks if possible, or restrict HTTP access to trusted administrative networks only
3. Disable HTTP access to IP Phone web interfaces; use HTTPS only with strong authentication
4. Implement network segmentation to restrict IP Phone communication to voice VLAN only
5. Monitor for exploitation attempts using IDS/IPS signatures

PATCHING GUIDANCE:
1. Obtain latest firmware patches from Cisco Security Advisories for your specific IP Phone models
2. Test patches in lab environment before production deployment
3. Schedule maintenance windows for firmware updates on all affected devices
4. Verify successful patch installation by checking firmware versions post-update

COMPENSATING CONTROLS (if patching delayed):
1. Implement firewall rules blocking HTTP access to IP Phones (port 80) from untrusted networks
2. Deploy Web Application Firewall (WAF) rules to filter malicious HTTP payloads
3. Enable IP Phone access logs and forward to SIEM for real-time monitoring
4. Restrict administrative access to IP Phone web interfaces via IP whitelisting
5. Disable unnecessary web services on IP Phones if supported by firmware

DETECTION RULES:
1. Monitor for HTTP requests to IP Phone web servers containing special characters or encoded payloads
2. Alert on any HTTP POST requests to IP Phone management interfaces
3. Track failed authentication attempts to IP Phone web interfaces
4. Monitor for unusual process execution on IP Phones (if logging available)
5. Detect outbound connections from IP Phones to external IP addresses
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حدد جميع هواتف Cisco IP في بيئتك وقم بتوثيق الموديلات والإصدارات المتأثرة
2. عزل هواتف Cisco IP الضعيفة عن شبكات الإنتاج إن أمكن، أو قيد وصول HTTP إلى الشبكات الإدارية الموثوقة فقط
3. عطل وصول HTTP إلى واجهات الويب للهاتف؛ استخدم HTTPS فقط مع المصادقة القوية
4. تطبيق تقسيم الشبكة لتقييد اتصالات هاتف IP إلى VLAN الصوت فقط
5. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS

إرشادات التصحيح:
1. احصل على أحدث تصحيحات البرامج الثابتة من مستشاريات أمان Cisco لموديلات هاتفك المحددة
2. اختبر التصحيحات في بيئة المختبر قبل نشرها في الإنتاج
3. جدول نوافذ الصيانة لتحديثات البرامج الثابتة على جميع الأجهزة المتأثرة
4. تحقق من نجاح تثبيت التصحيح بفحص إصدارات البرامج الثابتة بعد التحديث

الضوابط البديلة (إذا تأخر التصحيح):
1. تطبيق قواعد جدار الحماية لحظر وصول HTTP إلى هواتف IP (المنفذ 80) من الشبكات غير الموثوقة
2. نشر قواعد جدار تطبيقات الويب (WAF) لتصفية حمولات HTTP الضارة
3. تفعيل سجلات وصول هاتف IP وإعادة توجيهها إلى SIEM للمراقبة في الوقت الفعلي
4. تقييد الوصول الإداري إلى واجهات الويب لهاتف IP عبر القائمة البيضاء للعناوين
5. عطل الخدمات الويب غير الضرورية على هواتف IP إن دعمتها البرامج الثابتة

قواعد الكشف:
1. مراقبة طلبات HTTP إلى خوادم الويب لهاتف IP التي تحتوي على أحرف خاصة أو حمولات مشفرة
2. تنبيه على أي طلبات HTTP POST إلى واجهات إدارة هاتف IP
3. تتبع محاولات المصادقة الفاشلة لواجهات الويب لهاتف IP
4. مراقبة تنفيذ العمليات غير العادية على هواتف IP (إن توفر السجلات)
5. كشف الاتصالات الصادرة من هواتف IP إلى عناوين IP خارجية
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures A.8.1.1 - User access management and authentication A.12.2.1 - Change management procedures A.12.6.1 - Management of technical vulnerabilities A.13.1.1 - Network security perimeter controls
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification PR.AC-1 - Access control and authentication mechanisms PR.PT-2 - Protective technology deployment DE.CM-1 - Detection and monitoring of anomalous activity RS.RP-1 - Response planning and procedures
🟡 ISO 27001:2022
A.6.1.1 - Information security policies A.8.1.1 - User access management A.12.2.1 - Change management A.12.6.1 - Management of technical vulnerabilities A.13.1.1 - Network security perimeter
🟣 PCI DSS v4.0
Requirement 1.1 - Firewall configuration standards Requirement 2.1 - Default security parameters Requirement 6.2 - Security patches and updates
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Cisco:Cisco IP Phones
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS83.15%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-05-03
Published 2021-11-03
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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