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Vulnerabilities

CVE-2026-6843

Medium
CWE-134 — 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 nano. A local user could exploit a format string vulnerability in the `statusline()` function. By creating a directory with a name containing `printf` specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This results in a Denial of Service (DoS) for the `nano` application.

🤖 AI Executive Summary

CVE-2026-6843 is a format string vulnerability in nano's statusline() function that allows local users to cause a denial of service through specially crafted directory names. An attacker can trigger a segmentation fault by creating directories with printf format specifiers in their names.

📄 Description (Arabic)

تم اكتشاف ثغرة صيغة نص في دالة statusline بتطبيق محرر النصوص nano تسمح للمستخدمين المحليين باستغلالها. يمكن للمهاجم إنشاء مجلد باسم يحتوي على محددات printf مما يؤدي إلى انهيار التطبيق وحدوث خلل في الذاكرة.

🤖 ملخص تنفيذي (AI)

This vulnerability affects nano text editor through a format string flaw in the statusline function, allowing local attackers to crash the application via malicious directory names. The issue results in denial of service when nano attempts to display directory names containing format string specifiers.

🤖 AI Intelligence Analysis Analyzed: May 25, 2026 10:54
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: medium
🏢 Affected Saudi Sectors
government telecom energy
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.0
/ 10.0
🔧 Remediation Steps (English)
Update nano to the latest patched version that fixes the format string vulnerability in the statusline() function. Implement input validation and sanitization for directory names before display. Restrict local user access to sensitive directories where nano is used.
🔧 خطوات المعالجة (العربية)
قم بتحديث تطبيق nano إلى أحدث إصدار يتضمن إصلاح ثغرة صيغة النص. طبق التحقق من صحة المدخلات وتنظيفها لأسماء المجلدات قبل عرضها. قيد وصول المستخدمين المحليين إلى المجلدات الحساسة حيث يتم استخدام nano.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.7.1.1 A.12.6.1
🔵 SAMA CSF
ID.BE-5 PR.DS-6
🟡 ISO 27001:2022
A.12.2.1 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-134
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-134
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