Vulnerability · Published Oct 15, 2026 · Assigned by qnap
CVE-2026-26243Arbitrary Folder Deletion in Qsync Central 5.0.0.5
High 7.2
In plain English
A high-severity path traversal in Qsync Central from QNAP Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Official 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 5.0.0.6 and later Qsync Central 5.1.0.2 and later Qsync Central 5.2.0.4 and later
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| QNAP Systems Inc. | Qsync Central | 5.0.x – before 5.0.0.65.1.x – before 5.1.0.25.2.x – before 5.2.0.4 |
Weakness: CWE-22 · Vector: 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