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Global apt Managed Service Providers (MSPs) / IT Services HIGH 1h Global vulnerability Enterprise Software HIGH 1h Global general Cybersecurity Operations HIGH 2h Global general Cybersecurity Industry LOW 2h Global supply_chain Multiple Sectors CRITICAL 2h Global vulnerability Government/Federal Agencies HIGH 2h Global malware Enterprise/Multiple Sectors CRITICAL 2h Global data_breach E-commerce and Retail CRITICAL 3h Global vulnerability Government and Public Administration CRITICAL 3h Global vulnerability Physical Security and Surveillance CRITICAL 3h Global apt Managed Service Providers (MSPs) / IT Services HIGH 1h Global vulnerability Enterprise Software HIGH 1h Global general Cybersecurity Operations HIGH 2h Global general Cybersecurity Industry LOW 2h Global supply_chain Multiple Sectors CRITICAL 2h Global vulnerability Government/Federal Agencies HIGH 2h Global malware Enterprise/Multiple Sectors CRITICAL 2h Global data_breach E-commerce and Retail CRITICAL 3h Global vulnerability Government and Public Administration CRITICAL 3h Global vulnerability Physical Security and Surveillance CRITICAL 3h Global apt Managed Service Providers (MSPs) / IT Services HIGH 1h Global vulnerability Enterprise Software HIGH 1h Global general Cybersecurity Operations HIGH 2h Global general Cybersecurity Industry LOW 2h Global supply_chain Multiple Sectors CRITICAL 2h Global vulnerability Government/Federal Agencies HIGH 2h Global malware Enterprise/Multiple Sectors CRITICAL 2h Global data_breach E-commerce and Retail CRITICAL 3h Global vulnerability Government and Public Administration CRITICAL 3h Global vulnerability Physical Security and Surveillance CRITICAL 3h
Vulnerabilities

CVE-2026-45584

High
CWE-122 — Weakness Type
Published: May 20, 2026  ·  Modified: May 26, 2026  ·  Source: NVD
CVSS v3
8.1
🔗 NVD Official
📄 Description (English)

Heap-based buffer overflow in Microsoft Defender allows an unauthorized attacker to execute code over a network.

🤖 AI Executive Summary

A heap-based buffer overflow vulnerability in Microsoft Defender (CVE-2026-45584) allows remote attackers to execute arbitrary code with CVSS 8.1 severity. This critical flaw affects Windows systems relying on Defender as their primary security solution.

📄 Description (Arabic)

ثغرة تجاوز المخزن المؤقت في الذاكرة العميقة في Microsoft Defender تسمح بتنفيذ أكواد عشوائية عن بعد دون الحاجة إلى مصادقة. تؤثر هذه الثغرة على جميع أنظمة Windows التي تستخدم Defender كحل أمان أساسي.

🤖 ملخص تنفيذي (AI)

ثغرة تجاوز المخزن المؤقت في Microsoft Defender تسمح للمهاجمين بتنفيذ أكواد عشوائية عن بعد بدرجة خطورة عالية. هذا الضعف يؤثر على أنظمة Windows التي تعتمد على Defender كحل أمان أساسي.

🤖 AI Intelligence Analysis Analyzed: May 22, 2026 12:48
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
banking government telecom healthcare energy
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
Immediately apply Microsoft security patches for Defender; enable automatic updates; isolate affected systems from network if patches unavailable; monitor for exploitation attempts; consider supplementary endpoint protection solutions.
🔧 خطوات المعالجة (العربية)
تطبيق تحديثات أمان Microsoft فوراً لـ Defender؛ تفعيل التحديثات التلقائية؛ عزل الأنظمة المتأثرة عن الشبكة إذا لم تتوفر التصحيحات؛ مراقبة محاولات الاستغلال؛ النظر في حلول حماية نقاط النهاية الإضافية.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
2.1.1 2.2.4 3.1.1 4.1.2
🔵 SAMA CSF
ID.BE-1 PR.DS-6 PR.PT-1 DE.CM-1
🟡 ISO 27001:2022
A.12.2.1 A.12.6.1 A.14.2.1
📦 Affected Products / CPE 1 entries
microsoft:malware_protection_engine
📊 CVSS Score
8.1
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack VectorN — None / Network
Attack ComplexityH — High
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score8.1
CWECWE-122
EPSS0.03%
Exploit No
Patch ✗ No
Published 2026-05-20
Source Feed nvd
🇸🇦 Saudi Risk Score
9.0
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-122
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