CVE-2025-52867: qsync central DoS — Fix

Description

An uncontrolled resource consumption vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.2 ( 2025/07/31 ) and later

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
qnap	qsync_central	5.0.0.0 — 5.0.0.2

References

Advisories & Patches

https://www.qnap.com/en/security-advisory/qsa-25-35

Frequently Asked Questions

What is CVE-2025-52867? +

An uncontrolled resource consumption vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.2 ( 2025/07/31 ) and later It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-52867? +

CVE-2025-52867 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-52867? +

CVE-2025-52867 affects products from qnap, specifically: qsync_central. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-52867? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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