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Vulnerabilities

CVE-2026-34341

High
CWE-415 — Weakness Type
Published: May 12, 2026  ·  Modified: May 19, 2026  ·  Source: NVD
CVSS v3
7.0
🔗 NVD Official
📄 Description (English)

Double free in Windows Link-Layer Discovery Protocol (LLDP) allows an authorized attacker to elevate privileges locally.

🤖 AI Executive Summary

A double-free vulnerability in Windows LLDP (Link-Layer Discovery Protocol) affects multiple Windows 10 versions, allowing authenticated local attackers to achieve privilege escalation. With a CVSS score of 7.0 and no patch currently available, this poses a significant risk to Saudi organizations relying on Windows infrastructure. The vulnerability requires local access but can lead to complete system compromise once exploited.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 17, 2026 12:36
🇸🇦 Saudi Arabia Impact Assessment
Saudi banking sector (SAMA-regulated institutions) and government agencies (NCA oversight) face elevated risk due to widespread Windows 10 deployment in critical infrastructure. Energy sector (ARAMCO, SAECO) and telecommunications (STC, Mobily) networks utilizing LLDP for network discovery are particularly vulnerable. Healthcare organizations and financial services relying on Windows-based workstations for sensitive operations could experience unauthorized privilege escalation leading to data breach or system compromise. The requirement for local/authorized access somewhat limits exposure but insider threats and compromised accounts remain significant concerns.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Energy and Utilities Telecommunications Healthcare Critical Infrastructure
⚖️ Saudi Risk Score (AI)
7.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all Windows 10 systems (versions 1607, 1809, 21H2, 22H2) across your organization
2. Disable LLDP protocol where not operationally required using Group Policy or registry modifications
3. Restrict local administrative access and enforce principle of least privilege
4. Monitor for suspicious privilege escalation attempts in Windows Event Logs (Event ID 4688, 4672)

COMPENSATING CONTROLS:
5. Implement application whitelisting to prevent unauthorized process execution
6. Enable Windows Defender Exploit Guard and Attack Surface Reduction rules
7. Deploy endpoint detection and response (EDR) solutions with behavioral analysis
8. Enforce multi-factor authentication for all local and remote access
9. Isolate critical systems and implement network segmentation

DETECTION RULES:
10. Monitor for LLDP service crashes or unexpected restarts (Event ID 1000, 1001)
11. Alert on failed privilege escalation attempts and token elevation events
12. Track suspicious memory access patterns and double-free exploitation signatures
13. Review process creation logs for unusual parent-child relationships

PATCHING:
14. Monitor Microsoft Security Updates regularly for patch availability
15. Prepare patch deployment procedures for immediate application once released
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع أنظمة Windows 10 (الإصدارات 1607 و 1809 و 21H2 و 22H2) عبر مؤسستك
2. قم بتعطيل بروتوكول LLDP حيث لا يكون مطلوبًا تشغيليًا باستخدام Group Policy أو تعديلات السجل
3. قيد الوصول الإداري المحلي وفرض مبدأ الامتياز الأقل
4. راقب محاولات تصعيد الامتيازات المريبة في سجلات أحداث Windows (معرف الحدث 4688 و 4672)

الضوابط التعويضية:
5. تطبيق القائمة البيضاء للتطبيقات لمنع تنفيذ العمليات غير المصرح بها
6. تفعيل Windows Defender Exploit Guard وقواعد تقليل سطح الهجوم
7. نشر حلول الكشف والاستجابة للنقاط الطرفية (EDR) مع التحليل السلوكي
8. فرض المصادقة متعددة العوامل لجميع الوصول المحلي والبعيد
9. عزل الأنظمة الحرجة وتطبيق تقسيم الشبكة

قواعد الكشف:
10. راقب أعطال خدمة LLDP أو إعادة التشغيل غير المتوقعة (معرف الحدث 1000 و 1001)
11. تنبيه على محاولات تصعيد الامتيازات الفاشلة وأحداث رفع الرموز
12. تتبع أنماط الوصول إلى الذاكرة المريبة وتوقيعات استغلال التحرير المزدوج
13. مراجعة سجلات إنشاء العمليات للعلاقات الأب-الابن غير العادية

التصحيح:
14. راقب تحديثات أمان Microsoft بانتظام لتوفر التصحيح
15. جهز إجراءات نشر التصحيحات للتطبيق الفوري عند توفره
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policies ECC 2024 A.8.1.1 - User Endpoint Devices ECC 2024 A.8.2.1 - Privileged Access Management ECC 2024 A.12.2.1 - Change Management
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Hardware and Software Inventory SAMA CSF PR.AC-1 - Access Control Policy SAMA CSF PR.AC-4 - Access Rights Management SAMA CSF DE.CM-1 - System Monitoring
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access Control ISO 27001:2022 A.8.1 - User Endpoint Devices ISO 27001:2022 A.8.2 - Privileged Access Rights ISO 27001:2022 A.12.2 - Change Management ISO 27001:2022 A.12.6 - Management of Technical Vulnerabilities
🟣 PCI DSS v4.0.1
PCI DSS 2.2 - Configuration Standards PCI DSS 6.2 - Security Patches PCI DSS 7.1 - Limit Access to System Components
📦 Affected Products / CPE 25 entries
microsoft:windows_10_1607
microsoft:windows_10_1607
microsoft:windows_10_1809
microsoft:windows_10_1809
microsoft:windows_10_21h2
microsoft:windows_10_21h2
microsoft:windows_10_21h2
microsoft:windows_10_22h2
microsoft:windows_10_22h2
microsoft:windows_10_22h2
microsoft:windows_11_23h2
microsoft:windows_11_23h2
microsoft:windows_11_24h2
microsoft:windows_11_24h2
microsoft:windows_11_25h2
microsoft:windows_11_25h2
microsoft:windows_11_26h1
microsoft:windows_11_26h1
microsoft:windows_server_2012:-
microsoft:windows_server_2012:r2
microsoft:windows_server_2016
microsoft:windows_server_2019
microsoft:windows_server_2022
microsoft:windows_server_2022_23h2
microsoft:windows_server_2025
📊 CVSS Score
7.0
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorL — Low / Local
Attack ComplexityH — High
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityH — High
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score7.0
CWECWE-415
EPSS0.05%
Exploit No
Patch ✗ No
Published 2026-05-12
Source Feed nvd
🇸🇦 Saudi Risk Score
7.2
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-415
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