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Vulnerabilities

CVE-2025-48723

High
A buffer overflow vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes. We h
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 Qsync Central. 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:
Qsync Central 5.0.0.4 ( 2026/01/20 ) and later

🤖 AI Executive Summary

CVE-2025-48723 is a buffer overflow vulnerability in QNAP Qsync Central that allows authenticated remote attackers to modify memory or crash processes. With a CVSS score of 8.1, this poses a significant risk to organizations using Qsync Central for file synchronization and collaboration. The vulnerability requires valid user credentials but can lead to denial of service or potential code execution, making immediate patching critical for Saudi enterprises.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 25, 2026 22:39
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations in the following sectors: (1) Government agencies and ministries using Qsync Central for document management and inter-departmental file sharing; (2) Banking and financial institutions leveraging Qsync for secure file collaboration; (3) Healthcare organizations (MOH, private hospitals) using the platform for patient data and medical records synchronization; (4) Energy sector (ARAMCO, SABIC) for operational data sharing; (5) Telecommunications companies (STC, Mobily) for internal collaboration. The authenticated requirement reduces immediate risk but insider threats and compromised credentials remain significant concerns in the Saudi context.
🏢 Affected Saudi Sectors
Government and Public Administration Banking and Financial Services Healthcare Energy and Utilities Telecommunications Education Manufacturing
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all instances of Qsync Central running versions prior to 5.0.0.4
2. Review user access logs for suspicious authentication patterns or unauthorized access attempts
3. Implement network segmentation to restrict Qsync Central access to trusted networks only
4. Enable enhanced logging and monitoring for Qsync Central processes

PATCHING GUIDANCE:
1. Upgrade all Qsync Central installations to version 5.0.0.4 (released 2026/01/20) or later immediately
2. Test patches in non-production environments first
3. Schedule maintenance windows for production upgrades with minimal business disruption
4. Verify patch installation and service functionality post-upgrade

COMPENSATING CONTROLS (if immediate patching not possible):
1. Restrict Qsync Central access to authorized users only; disable unnecessary accounts
2. Implement IP whitelisting to limit access to known trusted locations
3. Deploy Web Application Firewall (WAF) rules to detect buffer overflow attempts
4. Monitor for process crashes and memory corruption indicators

DETECTION RULES:
1. Alert on unexpected process terminations of Qsync Central services
2. Monitor for abnormal memory access patterns or segmentation faults
3. Track failed authentication attempts followed by successful logins
4. Log all file modifications within Qsync Central directories
5. Implement YARA rules to detect buffer overflow payloads in network traffic
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع حالات Qsync Central التي تعمل بإصدارات سابقة للإصدار 5.0.0.4
2. مراجعة سجلات الوصول للمستخدمين بحثاً عن أنماط مصادقة مريبة أو محاولات وصول غير مصرح بها
3. تنفيذ تقسيم الشبكة لتقييد وصول Qsync Central إلى الشبكات الموثوقة فقط
4. تفعيل السجلات المحسنة والمراقبة لعمليات Qsync Central

إرشادات التصحيح:
1. ترقية جميع تثبيتات Qsync Central إلى الإصدار 5.0.0.4 (تم الإصدار في 2026/01/20) أو أحدث فوراً
2. اختبار التصحيحات في بيئات غير الإنتاج أولاً
3. جدولة نوافذ الصيانة لترقيات الإنتاج مع الحد الأدنى من انقطاع الأعمال
4. التحقق من تثبيت التصحيح وعمل الخدمة بعد الترقية

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
1. تقييد وصول Qsync Central للمستخدمين المصرح لهم فقط؛ تعطيل الحسابات غير الضرورية
2. تنفيذ القائمة البيضاء للعناوين لتقييد الوصول إلى المواقع الموثوقة المعروفة
3. نشر قواعد جدار حماية تطبيقات الويب (WAF) للكشف عن محاولات تجاوز المخزن المؤقت
4. مراقبة أعطال العمليات ومؤشرات تلف الذاكرة

قواعد الكشف:
1. تنبيهات على إنهاء العمليات غير المتوقعة لخدمات Qsync Central
2. مراقبة أنماط الوصول إلى الذاكرة غير الطبيعية أو أخطاء التقسيم
3. تتبع محاولات المصادقة الفاشلة متبوعة بعمليات تسجيل دخول ناجحة
4. تسجيل جميع تعديلات الملفات داخل دلائل Qsync Central
5. تنفيذ قواعد YARA للكشف عن حمولات تجاوز المخزن المؤقت في حركة المرور
📋 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 Management SAMA CSF PR.IP-12 - System and Information Integrity SAMA CSF DE.CM-1 - Detection and Analysis
🟡 ISO 27001:2022
ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.14.2.1 - Secure development policy and procedures ISO 27001:2022 A.8.1.1 - Screening and vetting of personnel
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates PCI DSS 11.2 - Vulnerability scanning and assessment
📦 Affected Products / CPE 1 entries
qnap:qsync_central
📊 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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