Qsync Central
CVE-2025-33033
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.2 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. EPSS exploitation probability: 0.07%. |
| Exploit ScenarioDerived | A remote attacker could access files and directories outside the intended path by sending crafted requests to the affected application. |
Get an e-mail when this CVE is exploited, patched or re-scored. Free account.
Alert meAnalysisAIv1 – Mar 28, 2026
A path traversal vulnerability has been reported to affect Qsync Central. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: Qsync Central 4.5.0.7 ( 2025/04/23 ) and later Affected products include: Qnap Qsync Central.
Know when Qsync Central gets its next vulnerability
- Watch products and get an email when something new is published
- Check this CVE against your own stack and servers
- Exploit and PoC references, threat intelligence from 22 sources
No credit card · 7-day full trial
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Primary rating from Vendor (qnapsecurity) · only source for this CVE.
CVSS VectorVendor: qnapsecurity
DescriptionCVE.org
A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data.
We have already fixed the vulnerability in the following version: Qsync Central 4.5.0.7 ( 2025/04/23 ) and later
Executive ViewAI
Organizations using A path traversal vulnerability face moderate risk from CVE-2025-33033, a path traversal vulnerability rated CVSS 7.2. This could allow attackers to access or modify files outside intended directories, potentially exposing sensitive configuration or credentials. Organizations should apply vendor updates when available and consider compensating controls in the interim.
Apply vendor patch. If immediate patching is not feasible: (1) Restrict file upload functionality via WAF; (2) Implement allowlist-based file type validation; (3) Use chroot/containerization to limit filesystem access.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.
Affected Products (CPE)CVE.org
More in Qsync Central
View allAn out-of-bounds write vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user accoun
SQL injection vulnerability in Qsync Central that allows authenticated remote attackers to execute arbitrary code or com
SQL injection in QNAP Qsync Central 5.0.0 (all builds prior to 5.0.0.2) allows a remote attacker who already holds a val
SQL injection in QNAP Qsync Central versions 5.0.0 through below 5.0.0.2 lets a remote attacker who already holds a vali
An improper certificate validation vulnerability has been reported to affect Qsync Central. Rated high severity (CVSS 8.
An improper certificate validation vulnerability has been reported to affect Qsync Central. Rated high severity (CVSS 8.
A buffer overflow vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, th
A buffer overflow vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, th
A buffer overflow vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, th
A buffer overflow vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, th
Format string vulnerability in QNAP Qsync Central that allows authenticated remote attackers to read sensitive data or m
A use of externally-controlled format string vulnerability has been reported to affect Qsync Central. If a remote attack
GitHub PoC
Exploit-DB