CVE-2025-44007 in Qsync Central
Summary
by MITRE • 10/03/2025
An allocation of resources without limits or throttling vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user 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 5.0.0.1 ( 2025/07/09 ) and later
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 10/03/2025
The vulnerability identified as CVE-2025-44007 represents a critical resource management flaw within Qsync Central that falls under the category of uncontrolled resource consumption or resource exhaustion. This issue manifests when a remote attacker who has already compromised a user account can exploit the system to consume excessive resources without proper limits or throttling mechanisms. The vulnerability directly impacts the availability and performance of the system by allowing malicious actors to deplete critical system resources such as memory, CPU cycles, or file handles, thereby preventing legitimate users and processes from accessing these same resources.
From a technical perspective, this vulnerability demonstrates characteristics consistent with CWE-400, which describes "Uncontrolled Resource Consumption," and aligns with ATT&CK technique T1499.004, "Resource Hijacking," where adversaries compromise systems to consume resources for malicious purposes. The flaw likely stems from insufficient input validation or resource allocation controls within the Qsync Central application, particularly in how it handles user sessions or file operations. When a compromised user account attempts to perform resource-intensive operations, the system fails to implement proper rate limiting, resource quotas, or allocation caps that would normally prevent such excessive consumption.
The operational impact of this vulnerability extends beyond simple performance degradation to potentially causing complete system outages or service denial. Attackers could exploit this weakness to launch resource exhaustion attacks that make the system unusable for legitimate users, effectively creating a denial of service condition. This scenario is particularly concerning in enterprise environments where Qsync Central may be managing critical file synchronization and sharing operations, as it could disrupt business continuity and compromise the availability of important data services. The vulnerability's exploitation requires only a compromised user account, making it relatively accessible to attackers who have already gained initial access through other means.
Mitigation strategies should focus on implementing comprehensive resource management controls within the Qsync Central application. Organizations should immediately upgrade to version 5.0.0.1 or later, which contains the necessary fixes for this vulnerability. Additionally, system administrators should implement monitoring solutions to detect unusual resource consumption patterns and establish automated alerts when resource usage exceeds predefined thresholds. Network segmentation and user access controls should be reinforced to limit the potential impact of compromised accounts, while also implementing proper resource quotas and allocation limits that prevent any single user or process from consuming excessive system resources. The fix included in the updated version addresses the core issue by introducing proper resource throttling mechanisms and allocation controls that prevent unbounded resource consumption.