CVE-2025-30276: An out-of-bounds write vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the…

PriorityP359high8.8CVSS 3.1

AVNACLPRLUINSUCHIHAH

EPSS

0.50%

39.6th percentile

An out-of-bounds write vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to modify or corrupt memory. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later

Affected

2 ranges

Vendor	Product	Version range	Fixed in
qnap	qsync_central	>= 5.0.0.0 < 5.0.0.4	5.0.0.4
qnap_systems_inc	qsync_central	>= 5.0.x.x < 5.0.0.4 ( 2026/01/20 )	5.0.0.4 ( 2026/01/20 )

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvdv4.04.9MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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