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Vulnerabilities

CVE-2026-4974

High ⚡ Exploit Available
A flaw has been found in Tenda AC7 15.03.06.44. Affected by this issue is the function fromSetSysTime of the file /goform/SetSysTimeCfg of the component POST Request Handler. Executing a manipulation
CWE-119 — Weakness Type
Published: Mar 27, 2026  ·  Modified: Apr 3, 2026  ·  Source: NVD
CVSS v3
8.8
🔗 NVD Official
📄 Description (English)

A flaw has been found in Tenda AC7 15.03.06.44. Affected by this issue is the function fromSetSysTime of the file /goform/SetSysTimeCfg of the component POST Request Handler. Executing a manipulation of the argument Time can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.

🤖 AI Executive Summary

A critical stack-based buffer overflow vulnerability exists in Tenda AC7 router firmware (version 15.03.06.44) affecting the SetSysTimeCfg POST handler. The vulnerability allows remote attackers to execute arbitrary code by manipulating the Time parameter, with public exploits already available. This poses immediate risk to Saudi organizations relying on Tenda routers for network infrastructure.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 23, 2026 13:55
🇸🇦 Saudi Arabia Impact Assessment
High impact on Saudi SMEs, government agencies, and educational institutions that commonly deploy Tenda AC7 routers for network access. Telecom sector (STC, Mobily) infrastructure may be affected if Tenda devices are used in customer premises equipment. Banking sector at risk if routers are used in branch networks. Healthcare facilities using Tenda routers for medical device connectivity face patient data exposure. Energy sector (ARAMCO) and critical infrastructure operators using these devices are vulnerable to network compromise and lateral movement attacks.
🏢 Affected Saudi Sectors
Telecommunications (STC, Mobily, Zain) Banking and Financial Services Government and Public Administration Healthcare and Medical Facilities Energy and Utilities (ARAMCO) Education and Universities Small and Medium Enterprises (SMEs) Retail and E-commerce
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Tenda AC7 devices running firmware 15.03.06.44 in your network using network scanning tools
2. Isolate affected routers from critical systems if possible, or implement network segmentation
3. Monitor for exploitation attempts using IDS/IPS signatures detecting POST requests to /goform/SetSysTimeCfg with abnormal Time parameter values
4. Disable remote management features on affected devices if not required
5. Implement firewall rules to restrict access to router management interfaces (ports 80, 443, 8080)

PATCHING GUIDANCE:
- Check Tenda support website for firmware updates beyond 15.03.06.44
- If no patch available, consider replacing affected devices with alternative vendors (TP-Link, D-Link, Netgear with current firmware)
- Maintain inventory of all Tenda devices for future patch deployment

COMPENSATING CONTROLS:
- Deploy Web Application Firewall (WAF) rules to block SetSysTimeCfg POST requests from untrusted sources
- Implement network access control (NAC) to restrict device management to authorized IP ranges
- Enable router logging and forward logs to SIEM for anomaly detection
- Conduct network segmentation to limit router compromise impact

DETECTION RULES:
- Monitor for POST requests to /goform/SetSysTimeCfg with Time parameter containing special characters or exceeding normal length (>20 bytes)
- Alert on failed authentication attempts to router management interfaces
- Track firmware version changes on Tenda devices
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Tenda AC7 التي تعمل بالإصدار 15.03.06.44 في شبكتك باستخدام أدوات فحص الشبكة
2. عزل أجهزة التوجيه المتأثرة عن الأنظمة الحرجة إن أمكن، أو تطبيق تقسيم الشبكة
3. مراقبة محاولات الاستغلال باستخدام توقيعات IDS/IPS التي تكتشف طلبات POST إلى /goform/SetSysTimeCfg بقيم معاملات وقت غير عادية
4. تعطيل ميزات الإدارة البعيدة على الأجهزة المتأثرة إذا لم تكن مطلوبة
5. تطبيق قواعد جدار الحماية لتقييد الوصول إلى واجهات إدارة جهاز التوجيه (المنافذ 80، 443، 8080)

إرشادات التصحيح:
- تحقق من موقع دعم Tenda للحصول على تحديثات البرنامج الثابت بعد الإصدار 15.03.06.44
- إذا لم يكن هناك تصحيح متاح، فكر في استبدال الأجهزة المتأثرة بموردين بدائل (TP-Link، D-Link، Netgear بالبرنامج الثابت الحالي)
- الحفاظ على جرد جميع أجهزة Tenda لنشر التصحيح المستقبلي

الضوابط التعويضية:
- نشر قواعد جدار تطبيقات الويب (WAF) لحظر طلبات SetSysTimeCfg POST من مصادر غير موثوقة
- تطبيق التحكم في الوصول إلى الشبكة (NAC) لتقييد إدارة الجهاز على نطاقات IP المصرح بها
- تفعيل تسجيل جهاز التوجيه وإعادة توجيه السجلات إلى SIEM للكشف عن الشذوذ
- تتبع تقسيم الشبكة لتحديد تأثير اختراق جهاز التوجيه

قواعد الكشف:
- مراقبة طلبات POST إلى /goform/SetSysTimeCfg بمعامل Time يحتوي على أحرف خاصة أو يتجاوز الطول الطبيعي (>20 بايت)
- تنبيه محاولات المصادقة الفاشلة لواجهات إدارة جهاز التوجيه
- تتبع تغييرات إصدار البرنامج الثابت على أجهزة Tenda
📋 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 network access
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification PR.IP-12 - Security patches and updates management DE.CM-1 - Detection and monitoring of network anomalies
🟡 ISO 27001:2022
A.12.6.1 - Management of technical vulnerabilities A.14.2.1 - Secure development and change management A.12.4.1 - Event logging and monitoring
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches and updates Requirement 11.2 - Vulnerability scanning and assessment
📦 Affected Products / CPE 1 entries
tenda:ac7_firmware:15.03.06.44
📊 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
EPSS0.08%
Exploit ✓ Yes
Patch ✗ No
Published 2026-03-27
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
exploit-available CWE-119
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