CVE-2025-57710 in Qsync Central
Summary
by MITRE • 02/11/2026
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
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Analysis
by VulDB Data Team • 02/12/2026
The vulnerability identified as CVE-2025-57710 represents a critical resource management flaw within Qsync Central that falls under the category of uncontrolled resource consumption or resource exhaustion attacks. This issue stems from insufficient limits and throttling mechanisms that govern how system resources are allocated and managed. The vulnerability exists in the core resource allocation logic where the system fails to implement proper boundaries or rate limiting controls that would normally prevent any single user or process from consuming excessive system resources. The flaw allows for a scenario where an attacker with administrative privileges can deliberately consume system resources without restriction, leading to resource starvation for legitimate users and services. This type of vulnerability is particularly dangerous because it leverages elevated privileges to create denial of service conditions that can impact the entire system infrastructure.
The technical implementation of this vulnerability demonstrates a fundamental failure in the system's resource management architecture. When an attacker possesses administrative access, they can exploit the lack of resource constraints to continuously allocate memory, CPU cycles, or other critical system resources without proper throttling mechanisms. This behavior typically manifests through excessive file handle allocation, memory consumption, or process creation that gradually depletes available system resources. The absence of resource limits means that even legitimate administrative tasks could potentially trigger resource exhaustion if not properly constrained. The vulnerability directly relates to CWE-400 which classifies resource exhaustion as a weakness that occurs when an application does not properly limit resource consumption, and it aligns with ATT&CK technique T1499 which covers resource exhaustion attacks. The attack vector requires an initial compromise or legitimate administrative access, making it particularly concerning for organizations where administrative privileges are not adequately protected or monitored.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially compromise the entire system availability and stability. When exploited, the vulnerability can cause cascading failures where legitimate system processes begin to fail due to resource unavailability, leading to service interruptions and potential data loss. The attack can be particularly devastating in environments where Qsync Central serves as a critical infrastructure component for file synchronization, backup operations, or network services. Organizations may experience complete system outages, degraded performance, or the inability to perform essential administrative functions. The vulnerability also creates opportunities for more sophisticated attacks where resource exhaustion is used as a stepping stone for additional compromise, as the system becomes increasingly unstable and less responsive to legitimate administrative actions. The impact is amplified in multi-tenant environments where one compromised administrative account could affect multiple users or services simultaneously.
Mitigation strategies for this vulnerability should focus on implementing comprehensive resource management controls and access restrictions. Organizations should immediately upgrade to Qsync Central version 5.0.0.4 or later, which contains the necessary patches and fixes for the resource allocation limitations. Beyond the immediate upgrade, system administrators should implement additional monitoring and alerting for unusual resource consumption patterns, particularly around administrative accounts. The implementation of resource quotas, process limits, and automatic resource cleanup mechanisms should be enforced across all system components. Network segmentation and privilege separation should be enhanced to limit the scope of potential exploitation, ensuring that administrative access is tightly controlled and monitored. Regular security audits should verify that resource management configurations are properly implemented and that access controls are functioning as intended. Organizations should also consider implementing automated systems that can detect and respond to resource exhaustion patterns before they cause system-wide outages, utilizing techniques that align with ATT&CK framework's defensive measures for resource exhaustion prevention and monitoring.