📄 Description (English)
Microsoft Windows Print Spooler Remote Code Execution Vulnerability — Microsoft Windows Print Spooler contains an unspecified vulnerability that allows for remote code execution.
🤖 AI Executive Summary
CVE-2021-1675 is a critical remote code execution vulnerability in Microsoft Windows Print Spooler affecting multiple Windows versions. With a CVSS score of 9.0 and publicly available exploits, this vulnerability poses an immediate threat to organizations across all sectors in Saudi Arabia. Attackers can execute arbitrary code with SYSTEM privileges without authentication, making it a high-priority threat requiring immediate patching.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 19, 2026 20:48
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses critical risk to Saudi banking sector (SAMA-regulated institutions), government agencies (NCA oversight), healthcare facilities, energy sector (ARAMCO and subsidiaries), and telecommunications providers (STC, Mobily). Government entities and critical infrastructure operators are particularly vulnerable due to widespread Windows deployment. The Print Spooler service is enabled by default on most Windows systems, creating a large attack surface across all sectors.
🏢 Affected Saudi Sectors
Banking and Financial Services
Government and Public Administration
Healthcare and Medical Facilities
Energy and Utilities
Telecommunications
Critical Infrastructure
Education
Manufacturing
🎯 MITRE ATT&CK Techniques
T1021.002 - Remote Services: RPC
T1059.001 - Command and Scripting Interpreter: PowerShell
T1053.005 - Scheduled Task/Job: Scheduled Task
T1547.001 - Boot or Logon Autostart Execution: Registry Run Keys
T1543.003 - Create or Modify System Process: Windows Service
T1569.002 - System Services: Service Execution
⚖️ Saudi Risk Score (AI)
9.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Apply Microsoft security patches KB5004945 (Windows 10/11) or KB5004947 (Windows Server 2016/2019/2022) immediately
2. If patching cannot be completed immediately, disable Print Spooler service: net stop spooler && sc config spooler start= disabled
3. Restrict network access to Print Spooler ports (TCP 135, 445) using firewall rules
4. Monitor for suspicious RPC traffic and Print Spooler process anomalies
DETECTION RULES:
- Monitor Event ID 1000 (Application Error) for spoolsv.exe crashes
- Alert on unexpected child processes spawned by spoolsv.exe
- Track RPC calls to Print Spooler interfaces (MS-RPRN protocol)
- Monitor for unusual network connections from Print Spooler service
COMPENSATING CONTROLS:
- Implement network segmentation to isolate print infrastructure
- Deploy EDR solutions to detect suspicious spoolsv.exe behavior
- Enable Windows Defender Application Guard for vulnerable systems
- Implement application whitelisting to prevent unauthorized code execution
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تطبيق تصحيحات أمان Microsoft KB5004945 (Windows 10/11) أو KB5004947 (Windows Server) فوراً
2. إذا لم يكن التصحيح ممكناً، عطّل خدمة Print Spooler: net stop spooler && sc config spooler start= disabled
3. قيّد الوصول الشبكي إلى منافذ Print Spooler (TCP 135, 445) باستخدام قواعد جدار الحماية
4. راقب حركة RPC المريبة وشذوذ عملية Print Spooler
قواعد الكشف:
- راقب Event ID 1000 لأخطاء spoolsv.exe
- نبّه على العمليات الفرعية غير المتوقعة من spoolsv.exe
- تتبع استدعاءات RPC لواجهات Print Spooler
- راقب الاتصالات الشبكية غير العادية من خدمة Print Spooler
الضوابط البديلة:
- تطبيق تقسيم الشبكة لعزل البنية التحتية للطباعة
- نشر حلول EDR للكشف عن السلوك المريب
- تفعيل Windows Defender Application Guard
- تطبيق القائمة البيضاء للتطبيقات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
ECC 2024 A.14.2.1 - Secure development policy
ECC 2024 A.12.2.1 - Monitoring and logging
ECC 2024 A.13.1.3 - Segregation of networks
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification
PR.IP-12 - System and information integrity
DE.CM-1 - Detection and analysis
RS.RP-1 - Response planning
🟡 ISO 27001:2022
A.12.2.1 - Monitoring and logging of information and communication technology
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Secure development policy and procedures
A.13.1.3 - Segregation of networks
🟣 PCI DSS v4.0
Requirement 6.2 - Security patches and updates
Requirement 11.2 - Vulnerability scanning
Requirement 12.2 - Configuration standards
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:Windows