CVE-2025-44014
Published: 03 October 2025
Summary
CVE-2025-44014 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Qnap Qsync Central. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 38.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly remediates the out-of-bounds write vulnerability by requiring timely identification, reporting, and patching of flaws in Qsync Central.
Implements memory protection mechanisms to prevent unauthorized memory modification or corruption from out-of-bounds write exploits.
Validates information inputs to prevent malformed data from triggering the out-of-bounds write vulnerability in Qsync Central.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Out-of-bounds write enables remote low-privileged memory corruption/modification in Qsync Central service, directly facilitating exploitation for privilege escalation (T1068) and exploitation of remote services (T1210).
NVD 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:…
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Qsync Central 5.0.0.1 ( 2025/07/09 ) and later
Deeper analysisAI
CVE-2025-44014 is an out-of-bounds write vulnerability (CWE-787) affecting Qsync Central. A remote attacker who gains a user account can exploit the vulnerability to modify or corrupt memory. The issue carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) and was published on 2025-10-03.
A remote attacker with low privileges, such as a compromised user account, can exploit this vulnerability over the network with low attack complexity and no user interaction required. Exploitation enables the attacker to modify or corrupt memory, resulting in high impacts to confidentiality, integrity, and availability.
QNAP has fixed the vulnerability in Qsync Central version 5.0.0.1, released on 2025/07/09, and later versions. Administrators should update affected systems immediately. Additional details are available in QNAP security advisory QSA-25-34 at https://www.qnap.com/en/security-advisory/qsa-25-34.
Details
- CWE(s)