📄 Description (English)
Microsoft Windows Privilege Escalation Vulnerability — A local elevation of privilege vulnerability exists in how splwow64.exe handles certain calls. An attacker who successfully exploited the vulnerability could elevate privileges on an affected system from low-integrity to medium-integrity.
🤖 AI Executive Summary
CVE-2019-0880 is a critical local privilege escalation vulnerability in Microsoft Windows' splwow64.exe (print spooler WOW64 process), allowing attackers to elevate from low-integrity to medium-integrity processes. With a CVSS score of 9.0 and a confirmed public exploit available, this vulnerability poses an immediate and severe risk to Windows environments. Threat actors can leverage this flaw as part of a multi-stage attack chain to gain elevated access and execute further malicious activities. Patching is available and should be applied immediately across all affected Windows systems.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 12, 2026 20:14
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability critically impacts Saudi organizations across multiple sectors. Government entities under NCA oversight running Windows environments are at high risk, particularly those with shared workstations or multi-user environments. Banking and financial institutions regulated by SAMA face elevated risk as attackers can use this flaw to bypass security controls and access sensitive financial data. Saudi Aramco and energy sector organizations with operational technology (OT) environments using Windows-based systems are vulnerable to lateral movement attacks. Healthcare organizations using Windows-based medical systems and telecom providers like STC with large Windows infrastructure footprints are also significantly exposed. Given the prevalence of Windows in Saudi enterprise environments and the availability of public exploits, the risk of exploitation in targeted attacks against Vision 2030 critical infrastructure is substantial.
🏢 Affected Saudi Sectors
Government
Banking
Energy
Healthcare
Telecom
Defense
Education
Retail
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Apply Microsoft Security Update KB4503267 (June 2019 Patch Tuesday) immediately across all affected Windows systems.
2. Prioritize patching of internet-facing systems, privileged workstations, and servers handling sensitive data.
3. Identify and inventory all systems running splwow64.exe using endpoint management tools (SCCM, Intune).
PATCHING GUIDANCE:
1. Download and deploy the official Microsoft patch from the Microsoft Update Catalog.
2. Apply patches in order: critical servers → domain controllers → workstations → OT/ICS Windows systems (with change management approval).
3. Reboot systems after patching to ensure the fix takes effect.
4. Verify patch deployment using vulnerability scanners (Tenable Nessus, Qualys).
COMPENSATING CONTROLS (if patching is delayed):
1. Restrict access to splwow64.exe using AppLocker or Windows Defender Application Control (WDAC) policies.
2. Implement least-privilege principles — ensure users operate with minimum required permissions.
3. Enable Windows Defender Credential Guard to limit privilege escalation impact.
4. Monitor and alert on unusual splwow64.exe process behavior using EDR solutions.
5. Restrict local logon rights to minimize the attacker's initial foothold opportunities.
DETECTION RULES:
1. Monitor for unusual parent-child process relationships involving splwow64.exe.
2. Create SIEM alerts for integrity level changes in process tokens (Windows Event ID 4688).
3. Deploy Sigma rule: detect splwow64.exe spawning unexpected child processes.
4. Enable Process Creation auditing (Event ID 4688) with command-line logging.
5. Hunt for exploitation indicators using EDR telemetry focusing on low-to-medium integrity transitions.
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تطبيق تحديث Microsoft الأمني KB4503267 (تصحيحات يونيو 2019) فوراً على جميع أنظمة Windows المتأثرة.
2. إعطاء الأولوية لتصحيح الأنظمة المكشوفة على الإنترنت ومحطات العمل ذات الامتيازات والخوادم التي تتعامل مع البيانات الحساسة.
3. تحديد وجرد جميع الأنظمة التي تشغّل splwow64.exe باستخدام أدوات إدارة النقاط الطرفية.
إرشادات التصحيح:
1. تنزيل ونشر التصحيح الرسمي من Microsoft Update Catalog.
2. تطبيق التصحيحات بالترتيب: الخوادم الحرجة ← وحدات التحكم بالنطاق ← محطات العمل ← أنظمة OT/ICS.
3. إعادة تشغيل الأنظمة بعد التصحيح لضمان تفعيل الإصلاح.
4. التحقق من نشر التصحيح باستخدام أدوات فحص الثغرات.
ضوابط التعويض (في حال تأخر التصحيح):
1. تقييد الوصول إلى splwow64.exe باستخدام سياسات AppLocker أو WDAC.
2. تطبيق مبدأ الحد الأدنى من الامتيازات لضمان عمل المستخدمين بالصلاحيات الضرورية فقط.
3. تفعيل Windows Defender Credential Guard للحد من تأثير رفع الامتيازات.
4. مراقبة سلوك عملية splwow64.exe غير المعتاد باستخدام حلول EDR.
5. تقييد حقوق تسجيل الدخول المحلي لتقليل فرص المهاجم في الحصول على موطئ قدم أولي.
قواعد الكشف:
1. مراقبة علاقات العمليات الأب-الابن غير المعتادة المتعلقة بـ splwow64.exe.
2. إنشاء تنبيهات SIEM لتغييرات مستوى النزاهة في رموز العمليات (معرف الحدث 4688).
3. نشر قاعدة Sigma للكشف عن splwow64.exe التي تولّد عمليات فرعية غير متوقعة.
4. تفعيل تدقيق إنشاء العمليات مع تسجيل سطر الأوامر.
5. البحث عن مؤشرات الاستغلال باستخدام بيانات EDR مع التركيز على الانتقالات من النزاهة المنخفضة إلى المتوسطة.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-4-2: Patch Management and Vulnerability Management
ECC-2-3-1: Endpoint Security Controls
ECC-1-3-6: Privilege Access Management
ECC-2-5-1: Security Monitoring and Logging
ECC-1-5-1: Asset Management and Inventory
🔵 SAMA CSF
Cybersecurity Operations — Vulnerability Management (3.3.5)
Cybersecurity Operations — Patch Management (3.3.6)
Identity and Access Management — Privileged Access (3.2.3)
Endpoint Security — Workstation Hardening (3.3.3)
Cybersecurity Monitoring — SIEM and Alerting (3.3.9)
🟡 ISO 27001:2022
A.8.8 — Management of Technical Vulnerabilities
A.8.2 — Privileged Access Rights
A.8.15 — Logging
A.8.19 — Installation of Software on Operational Systems
A.5.37 — Documented Operating Procedures
🟣 PCI DSS v4.0
Requirement 6.3.3 — All system components are protected from known vulnerabilities by installing applicable security patches
Requirement 7.2 — Access to system components and data is appropriately defined and assigned
Requirement 10.2 — Audit logs capture all individual user access to cardholder data
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Microsoft:Windows