📄 Description (English)
Citrix Workspace Application and Receiver for Windows Remote Code Execution Vulnerability — Citrix Workspace Application and Receiver for Windows contains remote code execution vulnerability resulting from local drive access preferences not being enforced into the clients' local drives.
🤖 AI Executive Summary
CVE-2019-11634 is a critical remote code execution vulnerability (CVSS 9.0) affecting Citrix Workspace Application and Receiver for Windows. The flaw stems from improper enforcement of local drive access preferences, allowing attackers to execute arbitrary code on affected systems. With a public exploit available, this vulnerability poses an immediate and severe threat to organizations relying on Citrix for remote access and virtual desktop infrastructure. Immediate patching is strongly recommended given the critical severity and exploit availability.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 13, 2026 14:47
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations heavily reliant on Citrix Workspace and Receiver for remote access are at significant risk. Key sectors include: Banking and Financial Services (SAMA-regulated entities using Citrix for remote banking operations and VDI), Government agencies (NCA-supervised ministries using Citrix for secure remote work), Energy sector (Saudi Aramco and NEOM project contractors using Citrix for OT/IT remote access), Healthcare (Ministry of Health facilities using Citrix for clinical application delivery), and Telecom (STC and Mobily using Citrix for internal operations). The exploit availability dramatically increases the likelihood of targeted attacks against Saudi critical infrastructure, particularly given the widespread adoption of Citrix solutions across Vision 2030 digital transformation initiatives.
🏢 Affected Saudi Sectors
Banking
Government
Energy
Healthcare
Telecom
Education
Defense
Transportation
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all instances of Citrix Workspace Application and Receiver for Windows across the environment using asset inventory tools.
2. Isolate or restrict network access to systems running vulnerable Citrix versions until patching is complete.
3. Disable local drive mapping in Citrix policies as a compensating control if immediate patching is not feasible.
PATCHING GUIDANCE:
1. Apply the official Citrix security patch for Citrix Workspace Application and Receiver for Windows as per Citrix Security Bulletin CTX246765.
2. Upgrade Citrix Workspace App to version 1904 or later.
3. Upgrade Citrix Receiver for Windows to the latest supported version or migrate to Citrix Workspace App.
4. Verify patch integrity after deployment.
COMPENSATING CONTROLS:
1. Enforce Group Policy to restrict local drive access within Citrix sessions.
2. Implement application whitelisting to prevent unauthorized code execution.
3. Deploy endpoint detection and response (EDR) solutions to monitor for suspicious process execution within Citrix sessions.
4. Enable enhanced logging on Citrix servers and endpoints.
DETECTION RULES:
1. Monitor for unusual process spawning from Citrix Workspace or Receiver processes (wfica32.exe, receiver.exe).
2. Alert on unexpected local drive access patterns from Citrix sessions.
3. Create SIEM rules to detect lateral movement originating from Citrix session hosts.
4. Monitor for exploitation indicators: unexpected child processes, unusual file writes to local drives from Citrix context.
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع نسخ تطبيق Citrix Workspace وReceiver لنظام Windows عبر بيئة العمل باستخدام أدوات جرد الأصول.
2. عزل أو تقييد الوصول الشبكي للأنظمة التي تعمل بإصدارات Citrix المعرضة للخطر حتى اكتمال التصحيح.
3. تعطيل تعيين محركات الأقراص المحلية في سياسات Citrix كإجراء تعويضي إذا تعذر التصحيح الفوري.
إرشادات التصحيح:
1. تطبيق التصحيح الأمني الرسمي من Citrix وفقاً للنشرة الأمنية CTX246765.
2. ترقية تطبيق Citrix Workspace إلى الإصدار 1904 أو أحدث.
3. ترقية Citrix Receiver لنظام Windows إلى أحدث إصدار مدعوم أو الانتقال إلى Citrix Workspace App.
4. التحقق من سلامة التصحيح بعد النشر.
ضوابط التعويض:
1. تطبيق سياسة المجموعة لتقييد الوصول إلى محركات الأقراص المحلية داخل جلسات Citrix.
2. تنفيذ قائمة بيضاء للتطبيقات لمنع تنفيذ التعليمات البرمجية غير المصرح بها.
3. نشر حلول الكشف والاستجابة على نقاط النهاية (EDR) لمراقبة تنفيذ العمليات المشبوهة داخل جلسات Citrix.
4. تفعيل التسجيل المحسّن على خوادم Citrix ونقاط النهاية.
قواعد الكشف:
1. مراقبة عمليات غير معتادة تنبثق من عمليات Citrix Workspace أو Receiver.
2. التنبيه على أنماط وصول غير معتادة لمحركات الأقراص المحلية من جلسات Citrix.
3. إنشاء قواعد SIEM للكشف عن الحركة الجانبية الصادرة من مضيفي جلسات Citrix.
4. مراقبة مؤشرات الاستغلال: العمليات الفرعية غير المتوقعة، وعمليات الكتابة غير المعتادة على محركات الأقراص المحلية.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-4-2: Cybersecurity Vulnerability Management
ECC-1-4-3: Patch Management
ECC-2-2-1: Endpoint Security
ECC-2-3-1: Remote Access Security
ECC-1-3-6: Security Configuration Management
🔵 SAMA CSF
3.3.3 Vulnerability Management
3.3.5 Patch Management
3.4.2 Endpoint Security
3.4.5 Remote Access Controls
3.3.6 Security Incident Management
🟡 ISO 27001:2022
A.12.6.1 Management of Technical Vulnerabilities
A.12.5.1 Installation of Software on Operational Systems
A.9.4.2 Secure Log-on Procedures
A.14.2.2 System Change Control Procedures
A.6.2.2 Teleworking
🟣 PCI DSS v4.0
Requirement 6.3.3: All system components are protected from known vulnerabilities
Requirement 6.4.1: Public-facing web applications are protected against attacks
Requirement 12.3.2: Targeted risk analysis for technology usage policies
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Citrix:Workspace Application and Receiver for Windows