What’s Vulnerable › Vulnerabilities
CVE-2026-41541: Symlink creation in qsyncsrv.cgi
- Severity: medium (CVSS 5.3 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-15 · updated 2026-10-15
- Weakness: CWE-61
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
Affected products
- QNAP Systems Inc. Qsync Central: from 5.0.x before 5.0.0.7; from 5.1.x before 5.1.0.3; from 5.2.x before 5.2.0.5; from 5.3.x before 5.3.0.2 — fixed in 5.0.0.7, 5.1.0.3, 5.2.0.5, 5.3.0.2
How to fix
Upgrade to a fixed version: QNAP Systems Inc. Qsync Central 5.0.0.7, 5.1.0.3, 5.2.0.5, 5.3.0.2. Check the vendor advisory for mitigations.
References
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