Medium severity · published Oct 3, 2025
CVE-2025-33034
A path traversal vulnerability has been reported to affect Qsync Central
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
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 5.0.0.1 ( 2025/07/09 ) and later
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QC
Qsync Central · Qnap
4.2.0.0 before 5.0.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-33034
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-33034
Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-25-34
More from Qsync Central
8.8
CVE-2025-30276
Qsync Central
8.8
CVE-2025-54153
An SQL injection vulnerability has been reported to affect Qsync Central
8.8
CVE-2025-53595
An SQL injection vulnerability has been reported to affect Qsync Central
8.8
CVE-2025-44014
An out-of-bounds write vulnerability has been reported to affect Qsync Central
8.8
CVE-2025-30278
An improper certificate validation vulnerability has been reported to affect Qsync Central