QNAP Systems Qsync Central prior 5.0.0.4 allocation of resources
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.8 | $0-$5k | 0.00 |
Summary
A vulnerability identified as problematic has been detected in QNAP Systems Qsync Central. The impacted element is an unknown function. The manipulation leads to allocation of resources. This vulnerability is listed as CVE-2025-57711. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.
Details
A vulnerability was found in QNAP Systems Qsync Central. It has been rated as problematic. This issue affects some unknown functionality. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:
An allocation of resources without limits or throttling vulnerability has been reported to affect Qsync Central. If a remote attacker gains an administrator account, they can then exploit the vulnerability to prevent other systems, applications, or processes from accessing the same type of resource. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later
The weakness was presented by coral as qsa-26-02. The advisory is shared at qnap.com. The identification of this vulnerability is CVE-2025-57711 since 08/18/2025. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are necessary for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.
Upgrading to version 5.0.0.4 eliminates this vulnerability.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Product
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 4.9VulDB Meta Temp Score: 4.8
VulDB Base Score: 4.9
VulDB Temp Score: 4.7
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 4.9
NVD Vector: 🔒
CVSSv2
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Allocation of resourcesCWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Status: Not defined
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔒
Upgrade: Qsync Central 5.0.0.4
Timeline
08/18/2025 CVE reserved02/11/2026 Advisory disclosed
02/11/2026 VulDB entry created
02/12/2026 VulDB entry last update
Sources
Advisory: qsa-26-02Researcher: coral
Status: Confirmed
CVE: CVE-2025-57711 (🔒)
GCVE (CVE): GCVE-0-2025-57711
GCVE (VulDB): GCVE-100-345473
Entry
Created: 02/11/2026 14:36Updated: 02/12/2026 21:42
Changes: 02/11/2026 14:36 (67), 02/12/2026 21:42 (11)
Complete: 🔍
Cache ID: 216::103
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
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