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Vulnerabilities

CVE-2026-1138

High ⚡ Exploit Available
A flaw has been found in UTT 进取 520W 1.7.7-180627. This affects the function strcpy of the file /goform/ConfigExceptQQ. Executing a manipulation can lead to buffer overflow. The attack may be performe
CWE-119 — Weakness Type
Published: Jan 19, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A flaw has been found in UTT 进取 520W 1.7.7-180627. This affects the function strcpy of the file /goform/ConfigExceptQQ. Executing a manipulation can lead to buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

🤖 AI Executive Summary

A critical buffer overflow vulnerability exists in UTT 520W firmware version 1.7.7-180627 affecting the /goform/ConfigExceptQQ endpoint. With a CVSS score of 8.8 and publicly available exploits, this vulnerability allows remote attackers to execute arbitrary code without authentication. The vendor has not responded to disclosure attempts, making immediate patching essential for all affected deployments in Saudi Arabia.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 22, 2026 10:27
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi telecommunications infrastructure (STC, Mobily, Zain) and government networks that may utilize UTT 520W devices for network management and configuration. Banking sector (SAMA-regulated institutions) could be impacted if these devices are deployed in network perimeters. Healthcare facilities and critical infrastructure operators using these devices for network access control face potential system compromise and data breach risks. The public exploit availability and vendor non-responsiveness elevate the threat level for all Saudi organizations.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Government Networks Banking and Financial Services Healthcare Critical Infrastructure/Energy Education
⚖️ Saudi Risk Score (AI)
8.9
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all UTT 520W devices in your network using asset discovery tools and network scanning
2. Isolate affected devices from production networks or restrict access to /goform/ConfigExceptQQ endpoint
3. Implement network segmentation to limit remote access to these devices
4. Enable authentication and access controls at firewall/WAF level

PATCHING:
1. Contact UTT vendor for available firmware patches beyond version 1.7.7-180627
2. Test patches in isolated lab environment before production deployment
3. Establish maintenance window for firmware updates with change management approval
4. Document all device configurations before patching

COMPENSATING CONTROLS (if patch unavailable):
1. Deploy Web Application Firewall (WAF) rules blocking access to /goform/ConfigExceptQQ
2. Implement strict IP whitelisting for device management access
3. Disable remote management interfaces if not required
4. Monitor for suspicious HTTP POST requests to vulnerable endpoint

DETECTION:
1. Monitor logs for requests to /goform/ConfigExceptQQ with large payloads
2. Alert on any strcpy function calls with untrusted input in network traffic
3. Implement IDS/IPS signatures for buffer overflow attempts
4. Monitor device CPU/memory anomalies indicating code execution
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة UTT 520W في شبكتك باستخدام أدوات اكتشاف الأصول والمسح الشبكي
2. عزل الأجهزة المتأثرة عن شبكات الإنتاج أو تقييد الوصول إلى نقطة النهاية /goform/ConfigExceptQQ
3. تنفيذ تقسيم الشبكة لتحديد الوصول البعيد إلى هذه الأجهزة
4. تفعيل المصادقة والتحكم في الوصول على مستوى جدار الحماية/WAF

التصحيح:
1. الاتصال بمورد UTT للحصول على تصحيحات البرنامج الثابت المتاحة بعد الإصدار 1.7.7-180627
2. اختبار التصحيحات في بيئة معملية معزولة قبل نشر الإنتاج
3. إنشاء نافذة صيانة لتحديثات البرنامج الثابت مع موافقة إدارة التغيير
4. توثيق جميع تكوينات الجهاز قبل التصحيح

الضوابط البديلة (إذا لم يكن التصحيح متاحًا):
1. نشر قواعد جدار تطبيقات الويب (WAF) لحظر الوصول إلى /goform/ConfigExceptQQ
2. تنفيذ قائمة بيضاء صارمة للعناوين لوصول إدارة الجهاز
3. تعطيل واجهات الإدارة البعيدة إذا لم تكن مطلوبة
4. مراقبة طلبات HTTP POST المريبة إلى نقطة النهاية الضعيفة

الكشف:
1. مراقبة السجلات للطلبات إلى /goform/ConfigExceptQQ مع حمولات كبيرة
2. التنبيه على أي استدعاءات دالة strcpy مع إدخال غير موثوق به في حركة المرور الشبكية
3. تنفيذ توقيعات IDS/IPS لمحاولات تجاوز المخزن المؤقت
4. مراقبة شذوذ وحدة المعالجة المركزية/الذاكرة للجهاز مما يشير إلى تنفيذ الكود
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities ECC 2024 A.14.2.1 - Secure development policy ECC 2024 A.12.2.1 - Monitoring and logging of access
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset management and vulnerability identification SAMA CSF PR.IP-12 - Security patch management SAMA CSF DE.CM-1 - Detection and monitoring systems
🟡 ISO 27001:2022
ISO 27001:2022 A.12.3.1 - Segregation of networks ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.14.2.1 - Secure development and change management
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches for system components PCI DSS 11.2 - Vulnerability scanning and management
📦 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 2026-01-19
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
8.9
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available CWE-119
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