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Vulnerabilities

CVE-2026-0836

High ⚡ Exploit Available
UTT 520W Router Buffer Overflow Vulnerability (CVE-2026-0836)
CWE-119 — Weakness Type
Published: Jan 11, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A vulnerability was determined in UTT 进取 520W 1.7.7-180627. The impacted element is the function strcpy of the file /goform/formConfigFastDirectionW. This manipulation of the argument ssid causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

🤖 AI Executive Summary

A critical buffer overflow vulnerability (CVE-2026-0836) exists in UTT 520W firmware version 1.7.7-180627 affecting the strcpy function in /goform/formConfigFastDirectionW. The vulnerability allows remote attackers to exploit the SSID parameter, with public exploits available and no vendor patch released despite early notification.

📄 Description (Arabic)

تتيح هذه الثغرة الأمنية للمهاجمين عن بُعد تنفيذ هجمات تجاوز سعة المخزن المؤقت من خلال التلاعب بمعامل SSID في دالة strcpy الموجودة في ملف /goform/formConfigFastDirectionW. يمكن استغلال هذه الثغرة لتنفيذ تعليمات برمجية عشوائية أو التسبب في رفض الخدمة على أجهزة التوجيه المتأثرة. تكمن خطورة الثغرة في توفر استغلالات عامة وعدم استجابة المورّد لإصدار تصحيح أمني، مما يترك الأجهزة المعرضة للخطر دون حماية. تؤثر الثغرة على الإصدار 1.7.7-180627 من البرنامج الثابت لموجه UTT 520W المستخدم في الشبكات المؤسسية والمنزلية.

🤖 ملخص تنفيذي (AI)

توجد ثغرة حرجة لتجاوز سعة المخزن المؤقت (CVE-2026-0836) في البرنامج الثابت لموجه UTT 520W الإصدار 1.7.7-180627 تؤثر على دالة strcpy في المسار /goform/formConfigFastDirectionW. تسمح الثغرة للمهاجمين عن بُعد باستغلال معامل SSID، مع توفر استغلالات عامة وعدم إصدار المورّد لأي تصحيح أمني رغم الإخطار المبكر.

🤖 AI Intelligence Analysis Analyzed: Feb 28, 2026 08:16
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations using UTT 520W routers in their network infrastructure face immediate risk of remote exploitation, potentially leading to unauthorized network access, data interception, and lateral movement within corporate networks. Given the availability of public exploits and lack of vendor patches, affected devices should be isolated or replaced urgently to prevent compromise of critical infrastructure and compliance violations.
🏢 Affected Saudi Sectors
الاتصالات وتقنية المعلومات القطاع المالي والمصرفي القطاع الحكومي التعليم الرعاية الصحية الطاقة والمرافق
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
9.0
/ 10.0
🔧 Remediation Steps (English)
1. Immediately identify and inventory all UTT 520W routers (firmware 1.7.7-180627) deployed across the network using network scanning tools and asset management systems
2. Isolate affected devices from critical network segments by implementing network segmentation, restricting administrative access to trusted IP addresses only, and deploying intrusion detection/prevention systems to monitor for exploitation attempts
3. Replace vulnerable UTT 520W devices with alternative router models from reputable vendors that provide regular security updates, or implement compensating controls such as placing devices behind next-generation firewalls with deep packet inspection until replacement is feasible
🔧 خطوات المعالجة (العربية)
1. تحديد وجرد جميع موجهات UTT 520W (البرنامج الثابت 1.7.7-180627) المنتشرة عبر الشبكة فوراً باستخدام أدوات فحص الشبكة وأنظمة إدارة الأصول
2. عزل الأجهزة المتأثرة عن قطاعات الشبكة الحرجة من خلال تطبيق تجزئة الشبكة، وتقييد الوصول الإداري لعناوين IP الموثوقة فقط، ونشر أنظمة كشف ومنع التسلل لرصد محاولات الاستغلال
3. استبدال أجهزة UTT 520W الضعيفة بنماذج موجهات بديلة من موردين موثوقين يوفرون تحديثات أمنية منتظمة، أو تطبيق ضوابط تعويضية مثل وضع الأجهزة خلف جدران حماية من الجيل التالي مع فحص عميق للحزم حتى يتسنى الاستبدال
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-1-2 ECC-2-1 ECC-3-1 ECC-4-1 ECC-5-1
🔵 SAMA CSF
CCC-1.1 CCC-2.1 CCC-3.2 CCC-4.1 CCC-5.1
🟡 ISO 27001:2022
A.12.6.1 A.12.2.1 A.13.1.1 A.18.2.3
📦 Affected Products / CPE 1 entries
utt:520w_firmware
📊 CVSS Score
8.8
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorN — None / Network
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 Score8.8
CWECWE-119
EPSS0.09%
Exploit ✓ Yes
Patch ✓ Yes
Published 2026-01-11
Source Feed nvd
Views 1
🇸🇦 Saudi Risk Score
9.0
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available CWE-119
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