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Vulnerabilities

CVE-2025-48725

High
A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory
CWE-120 — Weakness Type
Published: Feb 11, 2026  ·  Modified: Feb 28, 2026  ·  Source: NVD
CVSS v3
8.1
🔗 NVD Official
📄 Description (English)

A buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes.

We have already fixed the vulnerability in the following version:
QuTS hero h5.3.2.3354 build 20251225 and later

🤖 AI Executive Summary

A buffer overflow vulnerability (CVE-2025-48725) affects multiple QNAP NAS operating system versions, allowing authenticated remote attackers to modify memory or crash processes. With a CVSS score of 8.1, this poses significant risk to organizations using QNAP storage solutions for critical data. Patches are available and should be applied immediately to all affected systems.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 25, 2026 22:38
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations heavily reliant on QNAP NAS systems for data storage face significant risk, particularly in banking sector (SAMA-regulated institutions), government agencies (NCA oversight), healthcare facilities, and energy sector operations. The vulnerability requires authenticated access but enables privilege escalation and system compromise. Organizations using QNAP for backup and archival of sensitive financial, personal, and operational data are at elevated risk of data breach and service disruption.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Facilities Energy and Utilities Telecommunications Education and Research Retail and E-commerce Manufacturing
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all QNAP NAS devices running affected QTS versions (5.2.0.x through 5.2.3.3006 and earlier QuTS hero versions)
2. Restrict network access to QNAP management interfaces using firewall rules
3. Enforce strong authentication policies and disable default accounts
4. Monitor for suspicious login attempts and memory access patterns

PATCHING GUIDANCE:
1. Upgrade to QuTS hero h5.3.2.3354 build 20251225 or later immediately
2. For QTS systems, apply latest available patches from QNAP security advisories
3. Test patches in non-production environment first
4. Schedule maintenance windows for production system updates

COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement network segmentation isolating QNAP devices
2. Deploy intrusion detection/prevention systems monitoring NAS traffic
3. Enable audit logging for all administrative access
4. Implement multi-factor authentication for NAS access
5. Disable remote access protocols when not required

DETECTION RULES:
1. Monitor for unexpected process crashes on QNAP systems
2. Alert on memory access violations and segmentation faults
3. Track failed authentication attempts followed by successful logins
4. Monitor for unusual system calls from authenticated sessions
5. Log all administrative commands and configuration changes
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة QNAP NAS التي تعمل بإصدارات QTS المتأثرة (5.2.0.x حتى 5.2.3.3006 والإصدارات السابقة من QuTS hero)
2. تقييد الوصول إلى واجهات إدارة QNAP باستخدام قواعد جدار الحماية
3. فرض سياسات المصادقة القوية وتعطيل الحسابات الافتراضية
4. مراقبة محاولات تسجيل الدخول المريبة وأنماط الوصول إلى الذاكرة

إرشادات التصحيح:
1. الترقية إلى QuTS hero h5.3.2.3354 build 20251225 أو أحدث فوراً
2. بالنسبة لأنظمة QTS، تطبيق أحدث التصحيحات المتاحة من مستشاري أمان QNAP
3. اختبار التصحيحات في بيئة غير الإنتاج أولاً
4. جدولة نوافذ الصيانة لتحديثات الأنظمة الإنتاجية

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تنفيذ تقسيم الشبكة لعزل أجهزة QNAP
2. نشر أنظمة كشف/منع الاختراق لمراقبة حركة NAS
3. تفعيل تسجيل التدقيق لجميع الوصول الإداري
4. تنفيذ المصادقة متعددة العوامل للوصول إلى NAS
5. تعطيل بروتوكولات الوصول البعيد عند عدم الحاجة

قواعد الكشف:
1. مراقبة أعطال العمليات غير المتوقعة على أنظمة QNAP
2. التنبيه على انتهاكات الوصول إلى الذاكرة وأخطاء التقسيم
3. تتبع محاولات المصادقة الفاشلة متبوعة بعمليات تسجيل دخول ناجحة
4. مراقبة استدعاءات النظام غير العادية من جلسات المصادقة
5. تسجيل جميع الأوامر الإدارية والتغييرات في الإعدادات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.4.1 - Event logging and monitoring ECC 2024 A.12.4.3 - Administrator and operator logs ECC 2024 A.14.2.1 - Secure development policy ECC 2024 A.8.2.3 - User access management ECC 2024 A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
ID.RA-1 - Asset management and vulnerability identification PR.IP-12 - System and information integrity DE.CM-1 - Detection and analysis of anomalies RS.MI-2 - Incident response and recovery procedures
🟡 ISO 27001:2022
A.12.2.1 - Monitoring and measurement of information security A.12.6.1 - Management of technical vulnerabilities A.14.2.1 - Secure development policy and procedures A.8.2.3 - User access management A.12.4.1 - Event logging
🟣 PCI DSS v4.0.1
Requirement 6.2 - Security patches and updates Requirement 10.2 - Logging and monitoring Requirement 8.1 - User identification and authentication
📦 Affected Products / CPE 37 entries
qnap:qts:5.2.0.2737
qnap:qts:5.2.0.2744
qnap:qts:5.2.0.2782
qnap:qts:5.2.0.2802
qnap:qts:5.2.0.2823
qnap:qts:5.2.0.2851
qnap:qts:5.2.0.2860
qnap:qts:5.2.1.2930
qnap:qts:5.2.2.2950
qnap:qts:5.2.3.3006
qnap:qts:5.2.4.3070
qnap:qts:5.2.4.3079
qnap:qts:5.2.4.3092
qnap:qts:5.2.5.3145
qnap:qts:5.2.6.3195
qnap:qts:5.2.6.3229
qnap:qts:5.2.7.3256
qnap:qts:5.2.7.3297
qnap:qts:5.2.8.3332
qnap:quts_hero:h5.2.0.2737
qnap:quts_hero:h5.2.0.2782
qnap:quts_hero:h5.2.0.2789
qnap:quts_hero:h5.2.0.2802
qnap:quts_hero:h5.2.0.2823
qnap:quts_hero:h5.2.0.2851
qnap:quts_hero:h5.2.0.2860
qnap:quts_hero:h5.2.1.2929
qnap:quts_hero:h5.2.1.2940
qnap:quts_hero:h5.2.2.2952
qnap:quts_hero:h5.2.3.3006
qnap:quts_hero:h5.2.4.3070
qnap:quts_hero:h5.2.4.3079
qnap:quts_hero:h5.2.5.3138
qnap:quts_hero:h5.2.6.3195
qnap:quts_hero:h5.2.7.3256
qnap:quts_hero:h5.2.7.3297
qnap:quts_hero:h5.2.8.3321
📊 CVSS Score
8.1
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityH — High
AvailabilityH — High
📋 Quick Facts
Severity High
CVSS Score8.1
CWECWE-120
EPSS0.11%
Exploit No
Patch ✓ Yes
Published 2026-02-11
Source Feed nvd
Views 7
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-120
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