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Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 3h Global malware Technology and Cloud Services HIGH 3h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 3h Global malware Technology and Cloud Services HIGH 3h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h Global vulnerability Industrial Control Systems / IoT / Infrastructure CRITICAL 2h Global phishing Multiple sectors HIGH 3h Global insider Cybersecurity Services CRITICAL 3h Global ransomware Multiple sectors (U.S. companies) CRITICAL 3h Global malware Financial Services, Cryptocurrency CRITICAL 3h Global malware Technology and Cloud Services HIGH 3h Global general Financial Services and E-commerce MEDIUM 3h Global data_breach Social Media and Communications CRITICAL 4h Global general Cybersecurity Operations HIGH 4h Global phishing Technology and Consumer Services HIGH 4h
Vulnerabilities

CVE-2020-1464

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Microsoft Windows Spoofing Vulnerability — Microsoft Windows contains a spoofing vulnerability when Windows incorrectly validates file signatures, allowing an attacker to bypass security features and
Published: Nov 3, 2021  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Microsoft Windows Spoofing Vulnerability — Microsoft Windows contains a spoofing vulnerability when Windows incorrectly validates file signatures, allowing an attacker to bypass security features and load improperly signed files.

🤖 AI Executive Summary

CVE-2020-1464 is a critical Windows spoofing vulnerability (CVSS 9.0) that allows attackers to bypass Windows file signature validation, enabling the loading of improperly or maliciously signed files. This vulnerability has been actively exploited in the wild, with a public exploit available, making it an immediate threat to all Windows-based environments. Attackers can leverage this flaw to bypass security controls such as Windows Defender Application Control (WDAC), AppLocker, and code integrity policies. The existence of a patch makes remediation straightforward, but unpatched systems remain at severe risk of compromise.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 02:21
🇸🇦 Saudi Arabia Impact Assessment
تُعدّ هذه الثغرة ذات تأثير بالغ على المؤسسات السعودية نظراً للاعتماد الواسع على أنظمة Windows عبر جميع القطاعات. القطاعات الأكثر عرضة للخطر تشمل: القطاع المصرفي والمالي (البنوك الخاضعة لرقابة SAMA) حيث يمكن تجاوز ضوابط تكامل التطبيقات؛ الجهات الحكومية الخاضعة لإشراف NCA التي تعتمد على سياسات AppLocker وWDAC؛ قطاع الطاقة (أرامكو السعودية وسابك) حيث يمكن استخدام الثغرة لنشر برمجيات خبيثة موقّعة في بيئات OT/IT؛ قطاع الاتصالات (STC وزين) الذي يدير بنية تحتية حيوية؛ وقطاع الرعاية الصحية الذي يعتمد على أنظمة Windows في الأجهزة الطبية. الخطر الأكبر يكمن في إمكانية استخدام هذه الثغرة كجزء من هجمات متعددة المراحل لتجاوز الحلول الأمنية ونشر برمجيات خبيثة أو برامج فدية.
🏢 Affected Saudi Sectors
Banking Government Energy Telecom Healthcare Defense Education Retail
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Apply Microsoft security update KB4571756 (August 2020 Patch Tuesday) immediately across all Windows systems.
2. Prioritize patching of internet-facing systems, domain controllers, and critical infrastructure hosts.
3. Enable Windows Update and verify patch deployment status using WSUS, SCCM, or Intune.

PATCHING GUIDANCE:
4. Download and apply the patch from Microsoft Security Update Guide for CVE-2020-1464.
5. Verify patch installation by checking Windows Update history or running: wmic qfe list | findstr KB4571756
6. Reboot systems after patch application to ensure full remediation.

COMPENSATING CONTROLS (if patching is delayed):
7. Restrict execution of unsigned or untrusted executables using AppLocker or WDAC policies.
8. Enable and enforce Software Restriction Policies (SRP) in Group Policy.
9. Deploy application whitelisting to prevent execution of unauthorized binaries.
10. Monitor and alert on any new executable files introduced to critical systems.
11. Restrict user privileges to prevent loading of unsigned drivers or executables.

DETECTION RULES:
12. Monitor Windows Event Logs for Event ID 3001, 3002, 3003 (Code Integrity events).
13. Enable and review Windows Defender Application Control audit logs.
14. Deploy SIEM rules to detect anomalous file signature validation failures.
15. Use EDR solutions to detect execution of files with invalid or spoofed signatures.
16. Hunt for files with .jar extensions appended to PE files (known exploitation technique).
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تطبيق تحديث الأمان KB4571756 من Microsoft (تحديث أغسطس 2020) فوراً على جميع أنظمة Windows.
2. إعطاء الأولوية لترقيع الأنظمة المتصلة بالإنترنت ووحدات التحكم بالنطاق والمضيفين في البنية التحتية الحيوية.
3. تفعيل Windows Update والتحقق من حالة نشر التصحيح باستخدام WSUS أو SCCM أو Intune.

إرشادات الترقيع:
4. تنزيل وتطبيق التصحيح من دليل تحديثات أمان Microsoft لـ CVE-2020-1464.
5. التحقق من تثبيت التصحيح عبر فحص سجل Windows Update أو تشغيل الأمر: wmic qfe list | findstr KB4571756
6. إعادة تشغيل الأنظمة بعد تطبيق التصحيح لضمان المعالجة الكاملة.

ضوابط التعويض (في حال تأخر الترقيع):
7. تقييد تنفيذ الملفات التنفيذية غير الموقّعة أو غير الموثوقة باستخدام سياسات AppLocker أو WDAC.
8. تفعيل وتطبيق سياسات تقييد البرامج (SRP) في Group Policy.
9. نشر قوائم التطبيقات المسموح بها لمنع تنفيذ الثنائيات غير المصرح بها.
10. مراقبة أي ملفات تنفيذية جديدة تُدخَل على الأنظمة الحيوية والتنبيه عليها.
11. تقييد صلاحيات المستخدمين لمنع تحميل برامج التشغيل أو الملفات التنفيذية غير الموقّعة.

قواعد الكشف:
12. مراقبة سجلات أحداث Windows للأحداث 3001 و3002 و3003 (أحداث تكامل الكود).
13. تفعيل ومراجعة سجلات تدقيق Windows Defender Application Control.
14. نشر قواعد SIEM للكشف عن إخفاقات غير طبيعية في التحقق من توقيعات الملفات.
15. استخدام حلول EDR للكشف عن تنفيذ ملفات ذات توقيعات غير صالحة أو مزيفة.
16. البحث عن ملفات بامتداد .jar مُلحقة بملفات PE (أسلوب استغلال معروف).
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-4-2: Patch Management — Apply security patches in a timely manner ECC-2-3-1: Malware Protection — Implement controls to prevent malicious code execution ECC-2-5-1: Application Security — Ensure integrity of applications and code ECC-2-6-1: Vulnerability Management — Identify and remediate critical vulnerabilities ECC-3-3-2: Change Management — Control changes to critical systems
🔵 SAMA CSF
Cybersecurity Operations — Vulnerability and Patch Management Cybersecurity Operations — Threat and Incident Management Cybersecurity Architecture — Endpoint Security Controls Cybersecurity Governance — Risk Management Third-Party and Cloud Security — Software Integrity Verification
🟡 ISO 27001:2022
A.8.8 — Management of technical vulnerabilities A.8.19 — Installation of software on operational systems A.8.20 — Networks security and integrity controls A.8.25 — Secure development lifecycle A.5.37 — Documented operating procedures for patch management
🟣 PCI DSS v4.0
Requirement 6.3.3 — All system components are protected from known vulnerabilities by installing applicable security patches Requirement 6.4.1 — Public-facing web applications are protected against attacks Requirement 11.3.1 — Internal vulnerability scans are performed periodically Requirement 12.3.2 — Targeted risk analysis for each PCI DSS requirement
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:Windows
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS12.64%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-05-03
Published 2021-11-03
Source Feed cisa_kev
Views 4
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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