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Vulnerabilities

CVE-2026-10047

High
CWE-787 — Weakness Type
Published: Jun 2, 2026  ·  Modified: Jun 9, 2026  ·  Source: NVD
CVSS v3
7.8
🔗 NVD Official
📄 Description (English)

The Bitdefender Napoca bare-metal hypervisor contains an out-of-bounds write vulnerability in the real-mode hook handler, implemented in napoca/kernel/handler.c. The handler uses a guest-controlled SS:SP-derived offset as an index into the 1MB RealModeMemory buffer without bounds validation. With SS=0xFFFF and ESP=0xFFFF, the computed offset can reach 0x10FFEF, exceeding the RealModeMemory buffer by 65,519 bytes. The IRET frame push can therefore write past the end of the buffer into the hypervisor heap. The product is end-of-life and unsupported when assigned.

🤖 AI Executive Summary

CVE-2026-10047 is a critical out-of-bounds write vulnerability in the end-of-life Bitdefender Napoca bare-metal hypervisor that allows guest VMs to write beyond allocated buffer boundaries into hypervisor heap memory. With no patch available and the product unsupported, organizations using Napoca face severe risks including hypervisor compromise, VM escape, and complete infrastructure takeover. Immediate migration away from Napoca is essential for any Saudi organization still deploying this hypervisor.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Jun 9, 2026 01:37
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses extreme risk to Saudi government entities, critical infrastructure operators (ARAMCO, SEC), and financial institutions (SAMA-regulated banks) that may have legacy Napoca deployments for virtualization. The hypervisor-level compromise enables complete VM escape, allowing attackers to break isolation between virtual machines and access sensitive data across multiple workloads. Energy sector (ARAMCO, power utilities), telecommunications (STC, Mobily), and healthcare systems using Napoca for infrastructure virtualization face potential operational disruption and data exfiltration. Government agencies under NCA oversight are particularly vulnerable if Napoca supports classified or sensitive systems.
🏢 Affected Saudi Sectors
Government and Public Administration Banking and Financial Services Energy and Utilities Telecommunications Healthcare Critical Infrastructure Defense and Security
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Conduct urgent inventory of all Bitdefender Napoca deployments across your infrastructure
2. Isolate any systems running Napoca from production networks if possible
3. Implement network segmentation to restrict guest VM communication
4. Enable hypervisor-level monitoring and logging for suspicious memory access patterns

MITIGATION (No patch available):
5. Disable real-mode operations if supported by your workloads
6. Restrict guest VM privilege levels and disable direct hardware access
7. Implement strict input validation at hypervisor entry points
8. Deploy host-based intrusion detection on hypervisor systems

LONG-TERM REMEDIATION:
9. Develop migration plan to supported hypervisors (KVM, Hyper-V, VMware ESXi)
10. Prioritize migration of security-critical and data-sensitive workloads
11. Conduct full security audit of all VMs that ran on Napoca for compromise indicators
12. Implement enhanced monitoring during transition period

DETECTION RULES:
- Monitor for SS register values set to 0xFFFF in guest context switches
- Alert on heap corruption patterns or unexpected memory writes from hypervisor
- Track guest VM attempts to access memory beyond allocated regions
- Monitor for unusual IRET instruction sequences in real-mode handlers
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. إجراء جرد عاجل لجميع نشرات Bitdefender Napoca عبر البنية التحتية الخاصة بك
2. عزل أي أنظمة تعمل بـ Napoca عن شبكات الإنتاج إن أمكن
3. تنفيذ تقسيم الشبكة لتقييد اتصالات الأجهزة الافتراضية الضيفة
4. تفعيل المراقبة والتسجيل على مستوى المراقب الفائق للأنماط المريبة

التخفيف (لا يوجد تصحيح متاح):
5. تعطيل عمليات الوضع الحقيقي إذا كانت مدعومة من قبل أحمالك
6. تقييد مستويات امتياز الأجهزة الافتراضية الضيفة وتعطيل الوصول المباشر للأجهزة
7. تنفيذ التحقق الصارم من المدخلات عند نقاط دخول المراقب الفائق
8. نشر كشف التطفل على مستوى المضيف على أنظمة المراقب الفائق

العلاج طويل الأجل:
9. تطوير خطة الهجرة إلى المراقبين الفائقين المدعومين
10. أولويات الهجرة للأحمال الحساسة والحساسة للبيانات
11. إجراء تدقيق أمني شامل لجميع الأجهزة الافتراضية التي عملت على Napoca
12. تنفيذ المراقبة المحسنة خلال فترة الانتقال
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.5.1.1 - Information security policies and procedures A.8.1.1 - User access management and authentication A.12.2.1 - Change management procedures A.12.4.1 - Event logging and monitoring A.13.1.1 - Network security perimeter A.14.2.1 - System development and maintenance security
🔵 SAMA CSF
Governance - Risk Management Framework Protect - Access Control and Authentication Protect - Data Protection and Privacy Detect - Security Monitoring and Logging Respond - Incident Response and Recovery
🟡 ISO 27001:2022
A.5.1 - Management direction for information security A.8.1 - User endpoint devices A.8.2 - Privileged access rights A.12.2 - Change management A.12.4 - Logging A.13.1 - Network security A.14.2 - System development security
🟣 PCI DSS v4.0.1
Requirement 1 - Firewall configuration Requirement 2 - Default security parameters Requirement 6 - Secure development and vulnerability management Requirement 10 - Logging and monitoring Requirement 12 - Security policy
📦 Affected Products / CPE 1 entries
bitdefender:napoca
📊 CVSS Score
7.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.8
CWECWE-787
EPSS0.02%
Exploit No
Patch ✗ No
Published 2026-06-02
Source Feed nvd
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-787
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