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Global insider Education HIGH 3h Global supply_chain Software Development and Technology HIGH 8h Global apt Government/Critical Infrastructure CRITICAL 10h Global vulnerability Enterprise Software / Data Analytics CRITICAL 11h Global vulnerability Artificial Intelligence and Technology HIGH 14h Global general Technology and Artificial Intelligence MEDIUM 18h Global general Technology and Artificial Intelligence HIGH 19h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d Global insider Education HIGH 3h Global supply_chain Software Development and Technology HIGH 8h Global apt Government/Critical Infrastructure CRITICAL 10h Global vulnerability Enterprise Software / Data Analytics CRITICAL 11h Global vulnerability Artificial Intelligence and Technology HIGH 14h Global general Technology and Artificial Intelligence MEDIUM 18h Global general Technology and Artificial Intelligence HIGH 19h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d Global insider Education HIGH 3h Global supply_chain Software Development and Technology HIGH 8h Global apt Government/Critical Infrastructure CRITICAL 10h Global vulnerability Enterprise Software / Data Analytics CRITICAL 11h Global vulnerability Artificial Intelligence and Technology HIGH 14h Global general Technology and Artificial Intelligence MEDIUM 18h Global general Technology and Artificial Intelligence HIGH 19h Global vulnerability Higher Education CRITICAL 1d Global data_breach Government HIGH 1d Global supply_chain Software Development and Open Source Communities CRITICAL 1d
Vulnerabilities

CVE-2019-5591

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Fortinet FortiOS Default Configuration Vulnerability — Fortinet FortiOS contains a default configuration vulnerability that may allow an unauthenticated attacker on the same subnet to intercept sensit
Published: Nov 3, 2021  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Fortinet FortiOS Default Configuration Vulnerability — Fortinet FortiOS contains a default configuration vulnerability that may allow an unauthenticated attacker on the same subnet to intercept sensitive information by impersonating the Lightweight Directory Access Protocol (LDAP) server.

🤖 AI Executive Summary

Fortinet FortiOS contains a default configuration vulnerability allowing unauthenticated attackers on the same subnet to impersonate LDAP servers and intercept sensitive information. This critical flaw affects default deployments without proper network segmentation or authentication hardening.

📄 Description (Arabic)

تحتوي ثغرة Fortinet FortiOS على مشكلة في التكوين الافتراضي حيث يمكن لمهاجم غير مصرح على نفس الشبكة الفرعية انتحال خادم LDAP. يمكن للمهاجم اعتراض بيانات المصادقة والمعلومات الحساسة المرسلة عبر بروتوكول LDAP. تؤثر هذه الثغرة على جميع نشرات FortiOS الافتراضية التي لم يتم تصلبها.

🤖 ملخص تنفيذي (AI)

Fortinet FortiOS يحتوي على ثغرة في التكوين الافتراضي تسمح للمهاجمين غير المصرحين على نفس الشبكة بانتحال خوادم LDAP واعتراض المعلومات الحساسة. تؤثر هذه الثغرة الحرجة على النشرات الافتراضية بدون تقسيم شبكة مناسب أو تصلب المصادقة.

🤖 AI Intelligence Analysis Analyzed: Apr 24, 2026 08:32
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
government banking telecom energy healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
Immediately update Fortinet FortiOS to patched versions (6.0.6 or later, 5.6.13 or later). Implement network segmentation to restrict LDAP traffic to authorized subnets only. Enable LDAP authentication with strong credentials and disable default configurations. Monitor for suspicious LDAP server impersonation attempts and implement network access controls.
🔧 خطوات المعالجة (العربية)
قم بتحديث Fortinet FortiOS فوراً إلى الإصدارات المصححة (6.0.6 أو أحدث، 5.6.13 أو أحدث). تطبيق تقسيم الشبكة لتقييد حركة LDAP إلى الشبكات الفرعية المصرح بها فقط. تفعيل مصادقة LDAP بأوراق اعتماد قوية وتعطيل التكوينات الافتراضية. مراقبة محاولات انتحال خادم LDAP المريبة وتطبيق عناصر التحكم في الوصول إلى الشبكة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1.1 5.1.2 5.2.1 5.2.2 5.3.1
🔵 SAMA CSF
AC-2 AC-3 AC-6 AU-2 AU-12 SC-7
🟡 ISO 27001:2022
A.9.1.1 A.9.2.1 A.9.2.2 A.9.2.5 A.9.4.1 A.13.1.1
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Fortinet:FortiOS
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS48.36%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-05-03
Published 2021-11-03
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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