CVE-2025-30276
Analyzed Analyzed - Analysis Complete
Out-of-Bounds Write in Qsync Central Allows Memory Corruption

Publication date: 2026-02-11

Last updated on: 2026-02-11

Assigner: QNAP Systems, Inc.

Description
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
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Meta Information
Published
2026-02-11
Last Modified
2026-02-11
Generated
2026-06-16
AI Q&A
2026-02-11
EPSS Evaluated
2026-06-15
NVD
CVE-2025-30276
EUVD
EUVD-2025-207454
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
qnap qsync_central From 5.0.0.0 (inc) to 5.0.0.4 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.
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Executive Summary

This vulnerability is an out-of-bounds write issue affecting Qsync Central. It allows a remote attacker who has gained access to a user account to exploit the vulnerability to modify or corrupt memory.

Impact Analysis

If exploited, this vulnerability can allow an attacker with user account access to modify or corrupt memory, potentially leading to unexpected behavior, data corruption, or system instability.

Compliance Impact

I don't know

Detection Guidance

I don't know

Mitigation Strategies

To mitigate this vulnerability, you should upgrade Qsync Central to version 5.0.0.4 or later, as the vulnerability has been fixed in that release.

Additionally, restrict remote attacker access by limiting user account permissions and monitoring for unauthorized access attempts.

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