CVE-2026-41541
Received Received - Intake

Symlink Following Vulnerability in Qsync Central

Vulnerability report for CVE-2026-41541, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-15

Last updated on: 2026-10-15

Assigner: QNAP Systems, Inc.

Description

An unix symbolic link (symlink) following vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to compromise the security of the system. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.7 and later Qsync Central 5.1.0.3 and later Qsync Central 5.2.0.5 and later Qsync Central 5.3.0.2 and later

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-10-15
Last Modified
2026-10-15
Generated
2026-10-15
AI Q&A
2026-10-15
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
QNAP Systems Inc. Qsync Central 5.0.x
QNAP Systems Inc. Qsync Central 5.1.x
QNAP Systems Inc. Qsync Central 5.2.x
QNAP Systems Inc. Qsync Central 5.3.x

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-61 The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

Attack-Flow Graph

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Executive Summary

This is a unix symbolic link (symlink) following vulnerability in Qsync Central. If a remote attacker gains access to a user account, they can exploit this flaw to compromise the system's security by manipulating symlinks.

Impact Analysis

An attacker with user account access could exploit this to escalate privileges, access unauthorized files, or perform other malicious actions on the system.

Mitigation Strategies

Update Qsync Central to version 5.0.0.7 or later, 5.1.0.3 or later, 5.2.0.5 or later, or 5.3.0.2 or later depending on your current version. Remove unauthorized user accounts that may have access to the system.

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