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Vulnerabilities

CVE-2026-6862

Medium
CWE-674 — Weakness Type
Published: Apr 22, 2026  ·  Modified: Apr 25, 2026  ·  Source: NVD
CVSS v3
5.5
🔗 NVD Official
📄 Description (English)

A flaw was found in libefiboot, a component of efivar. The device path node parser in libefiboot fails to validate that each node's Length field is at least 4 bytes, which is the minimum size for an EFI (Extensible Firmware Interface) device path node header. A local user could exploit this vulnerability by providing a specially crafted device path node. This can lead to infinite recursion, causing stack exhaustion and a process crash, resulting in a denial of service (DoS).

🤖 AI Executive Summary

CVE-2026-6862 is a denial of service vulnerability in libefiboot's device path parser that fails to validate minimum node length requirements, allowing local users to trigger infinite recursion and stack exhaustion. The flaw affects EFI firmware components and can crash processes through specially crafted device path inputs.

📄 Description (Arabic)

تحتوي هذه الثغرة على خلل في مكون libefiboot حيث لا يتحقق محلل عقدة مسار الجهاز من أن حقل الطول لكل عقدة يبلغ 4 بايتات على الأقل. يمكن لمستخدم محلي استغلال هذا الخلل بتقديم عقدة مسار جهاز مصنوعة بشكل خاص لتسبب استدعاء متكرر لا نهائي.

🤖 ملخص تنفيذي (AI)

هذا الثغرة في مكون libefiboot تسمح للمستخدمين المحليين باستغلال فشل التحقق من طول عقدة مسار الجهاز، مما يؤدي إلى استدعاء متكرر لا نهائي وإرهاق المكدس. يمكن للمهاجمين إيقاف الخدمات من خلال إدخال مسارات جهاز مصنوعة بشكل خاص.

🤖 AI Intelligence Analysis Analyzed: May 25, 2026 10:54
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
government energy telecom
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.0
/ 10.0
🔧 Remediation Steps (English)
Update libefiboot to the latest patched version that implements proper validation of device path node Length fields to ensure minimum 4-byte header size. Apply firmware updates from your system vendor and restrict local user access to EFI device path manipulation interfaces.
🔧 خطوات المعالجة (العربية)
قم بتحديث libefiboot إلى أحدث إصدار يتضمن التحقق الصحيح من حقول طول عقدة مسار الجهاز. طبق تحديثات البرامج الثابتة من مورد النظام وقيد وصول المستخدمين المحليين إلى واجهات معالجة مسارات أجهزة EFI.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.12.6.1 A.14.2.1
🔵 SAMA CSF
ID.BE-5 PR.DS-6
🟡 ISO 27001:2022
A.12.6.1 A.14.2.1
📊 CVSS Score
5.5
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionR — Required
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity Medium
CVSS Score5.5
CWECWE-674
EPSS0.02%
Exploit No
Patch ✗ No
Published 2026-04-22
Source Feed nvd
🇸🇦 Saudi Risk Score
5.0
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-674
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