High severity · published Oct 15, 2026
CVE-2026-26243
Arbitrary Folder Deletion in Qsync Central 5.0.0.5
7.2
CVSS
0.4%
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 5.0.0.6 and later Qsync Central 5.1.0.2 and later Qsync Central 5.2.0.4 and later
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QC
Qsync Central · QNAP Systems Inc.
5.0.x before 5.0.0.6; 5.1.x before 5.1.0.2; 5.2.x before 5.2.0.4 · source: vendor