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Vulnerabilities

CVE-2025-52872

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: Jan 2, 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 versions:
QTS 5.2.7.3256 build 20250913 and later
QuTS hero h5.2.7.3256 build 20250913 and later
QuTS hero h5.3.0.3192 build 20250716 and later

🤖 AI Executive Summary

A buffer overflow vulnerability (CVE-2025-52872) affects multiple QNAP NAS operating system versions, requiring authenticated access to exploit. Successful exploitation allows attackers to modify memory or crash processes, potentially leading to data loss or system compromise. CVSS 8.1 rating indicates high severity. Patches are available for QTS 5.2.7.3256 build 20250913 and later, and QuTS hero versions h5.2.7.3256 and h5.3.0.3192 with specified build dates.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 26, 2026 02:18
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations utilizing QNAP NAS systems for data storage and backup are at significant risk, particularly in banking sector (SAMA-regulated institutions), government agencies (NCA oversight), healthcare facilities, and energy sector operations. The vulnerability impacts data integrity and availability for critical infrastructure. Organizations in Saudi Arabia relying on QNAP for backup and archival systems face potential data corruption, unauthorized access to sensitive information, and operational disruption. Financial institutions and government entities storing regulated data are especially vulnerable.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare and Medical Facilities Energy and Utilities Telecommunications Education and Research Media and Broadcasting
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all QNAP NAS devices running affected QTS and QuTS hero versions listed in CVE details
2. Restrict user account access to NAS systems to authorized personnel only
3. Implement network segmentation to limit NAS access from untrusted networks
4. Monitor authentication logs for suspicious login attempts

PATCHING GUIDANCE:
1. Prioritize upgrading to QTS 5.2.7.3256 build 20250913 or later
2. Update QuTS hero systems to h5.2.7.3256 build 20250913 or h5.3.0.3192 build 20250716 or later
3. Test patches in non-production environment before deployment
4. Schedule maintenance windows for patching to minimize business impact

COMPENSATING CONTROLS (if immediate patching not possible):
1. Disable remote access to NAS management interfaces
2. Implement strong password policies and multi-factor authentication for NAS accounts
3. Deploy intrusion detection systems to monitor for exploitation attempts
4. Maintain offline backups of critical data

DETECTION RULES:
1. Monitor for failed authentication attempts followed by successful logins
2. Alert on process crashes or unexpected memory access patterns
3. Track modifications to system files and configuration
4. Monitor network traffic to NAS management ports for anomalies
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة QNAP NAS التي تعمل بالإصدارات المتأثرة
2. تقييد وصول حسابات المستخدمين إلى الأنظمة المصرح بها فقط
3. تطبيق تقسيم الشبكة لتحديد وصول NAS من الشبكات غير الموثوقة
4. مراقبة سجلات المصادقة للكشف عن محاولات تسجيل دخول مريبة

إرشادات التصحيح:
1. إعطاء الأولوية للترقية إلى الإصدارات المصححة المحددة
2. اختبار التصحيحات في بيئة غير الإنتاج قبل النشر
3. جدولة نوافذ الصيانة لتقليل تأثير الأعمال

الضوابط البديلة:
1. تعطيل الوصول البعيد إلى واجهات إدارة NAS
2. تطبيق سياسات كلمات مرور قوية والمصادقة متعددة العوامل
3. نشر أنظمة كشف الاختراق لمراقبة محاولات الاستغلال
4. الحفاظ على نسخ احتياطية غير متصلة من البيانات الحرجة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 Control 5.1 - Access Control and Authentication ECC 2024 Control 5.2 - User Access Management ECC 2024 Control 6.1 - System Hardening ECC 2024 Control 7.1 - Vulnerability Management
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Asset Management SAMA CSF PR.AC-1 - Access Control SAMA CSF PR.PT-1 - Security Testing SAMA CSF DE.CM-1 - Detection and Analysis
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access Control ISO 27001:2022 A.8.1 - User Endpoint Devices ISO 27001:2022 A.8.2 - Privileged Access Rights ISO 27001:2022 A.14.2 - Software Development
🟣 PCI DSS v4.0.1
PCI DSS 2.1 - Configuration Standards PCI DSS 6.2 - Security Patches PCI DSS 8.1 - User Access Management
📦 Affected Products / CPE 34 entries
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:h5.3.0.3115
qnap:quts_hero:h5.3.0.3145
qnap:quts_hero:h5.3.0.3192
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
📊 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
EPSS0.12%
Exploit No
Patch ✓ Yes
Published 2026-01-02
Source Feed nvd
Views 5
🇸🇦 Saudi Risk Score
7.8
/ 10.0 — Saudi Risk
Priority: HIGH
🏷️ Tags
CWE-120
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