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Vulnerabilities

CVE-2018-0172

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Cisco IOS and IOS XE Software Improper Input Validation Vulnerability — A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow fo
Published: Mar 3, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Cisco IOS and IOS XE Software Improper Input Validation Vulnerability — A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow for denial-of-service (DoS).

🤖 AI Executive Summary

Cisco IOS and IOS XE Software contain an improper input validation vulnerability in DHCP option 82 encapsulation that allows remote attackers to cause denial-of-service conditions. The vulnerability affects network devices widely deployed in enterprise and service provider environments.

📄 Description (Arabic)

تؤثر هذه الثغرة على وظيفة تغليف خيار DHCP 82 في برامج Cisco IOS و IOS XE. يمكن لمهاجم بعيد استغلال هذه الثغرة بإرسال حزم DHCP مشوهة لإحداث حالة الحرمان من الخدمة. تؤثر الثغرة على أجهزة التوجيه والمحاولات المستخدمة في البنية التحتية الحرجة.

🤖 ملخص تنفيذي (AI)

ثغرة في برامج Cisco IOS و IOS XE تتعلق بالتحقق غير الصحيح من المدخلات في وظيفة تغليف خيار DHCP 82 تسمح بهجمات الحرمان من الخدمة. تؤثر الثغرة على أجهزة الشبكة المنتشرة على نطاق واسع في بيئات المؤسسات ومزودي الخدمات.

🤖 AI Intelligence Analysis Analyzed: Apr 25, 2026 06:19
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
telecom government banking energy
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
Update Cisco IOS and IOS XE Software to patched versions. Apply security patches immediately from Cisco security advisories. Implement network access controls and rate limiting for DHCP traffic. Monitor DHCP traffic for malformed option 82 encapsulation attempts.
🔧 خطوات المعالجة (العربية)
قم بتحديث برامج Cisco IOS و IOS XE إلى الإصدارات المصححة. طبق تصحيحات الأمان فوراً من نشرات Cisco الأمنية. طبق عناصر التحكم في الوصول إلى الشبكة وتحديد معدل حركة DHCP. راقب حركة DHCP للكشف عن محاولات تغليف الخيار 82 المشوهة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
4.1 4.2 4.3 5.1
🔵 SAMA CSF
ID.BE-1 PR.IP-1 PR.IP-12 DE.CM-1
🟡 ISO 27001:2022
A.12.6.1 A.14.2.1 A.14.2.5
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Cisco:IOS and IOS XE Software
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS5.89%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-03-17
Published 2022-03-03
Source Feed cisa_kev
Views 5
🇸🇦 Saudi Risk Score
9.0
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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