CVE-2025-30276

4.9 mediumEPSS 0.6%

Medium (4.9) in qnap qsync central. EPSS 0.6% chance of exploitation in the next 30 days.

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

Severity

CVSS 4.0

4.9 medium

CVSS: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

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2026-02-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

qnap:qsync_central

References

https://www.qnap.com/en/security-advisory/qsa-26-02

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