← Vulnerability feed

Vulnerability record · CVE-2025-57709 · published 11 February 2026

CVE-2025-57709: Qnap qsync central heap-based buffer overflow vulnerability

Qnap · Qsync Central

A buffer overflow vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later

1.3 CVSS 4.0 Low EPSS 0.57% · top 55.2% CWE-122 · Heap-based buffer overflowCWE-787 · Out-of-bounds write
1.3CVSS 4.0 base score
0.57%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

A buffer overflow vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

Track CVE-2025-57709 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2025-29892Qnap qsync central sql injection vulnerabilityAn SQL injection vulnerability has been reported to affect Qsync Central. If exploited, the vulnerability could allow remote attackers who have gaine…EPSS 0.47%8.6CVE-2025-53595Qnap qsync central sql injection vulnerabilityAn SQL injection vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulner…EPSS 0.42%8.6CVE-2025-54153Qnap qsync central sql injection vulnerabilityAn SQL injection vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulner…EPSS 0.42%8.3CVE-2025-30277Qnap qsync central improper certificate validation vulnerabilityAn improper certificate validation vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then …EPSS 0.23%8.3CVE-2025-30278Qnap qsync central improper certificate validation vulnerabilityAn improper certificate validation vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then …EPSS 0.23%8.1CVE-2023-47564Qnap qsync central incorrect permission assignment vulnerabilityAn incorrect permission assignment for critical resource vulnerability has been reported to affect Qsync Central. If exploited, the vulnerability cou…EPSS 1.0%7.5CVE-2025-29893Qnap qsync central sql injection vulnerabilityAn SQL injection vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulner…EPSS 0.47%7.5CVE-2025-29894Qnap qsync central sql injection vulnerabilityAn SQL injection vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulner…EPSS 0.47%

Source: NIST National Vulnerability Database (record CVE-2025-57709), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.