CVE-2025-44006 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
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Analysis
by VulDB Data Team • 10/03/2025
The vulnerability identified as CVE-2025-44006 represents a critical resource allocation flaw within Qsync Central that exposes the system to potential denial of service attacks. This issue manifests as an insufficient mechanism for limiting or throttling resource allocation, creating a scenario where authenticated attackers can manipulate system resources to disrupt normal operations. The vulnerability specifically affects Qsync Central versions prior to 5.0.0.1 released on July 9, 2025, indicating that organizations running older versions remain at significant risk of exploitation.
The technical flaw underlying CVE-2025-44006 falls under the category of resource exhaustion vulnerabilities that are commonly classified as CWE-400 - Uncontrolled Resource Consumption. This weakness allows attackers to consume system resources without proper bounds or controls, effectively creating a resource starvation condition that prevents legitimate users or processes from accessing necessary system resources. The vulnerability operates at the application level where resource allocation mechanisms lack adequate enforcement of limits, enabling malicious actors to continuously request resources until system performance degrades or fails completely.
From an operational impact perspective, this vulnerability creates a severe threat landscape for organizations relying on Qsync Central for their synchronization and file management needs. When exploited, the vulnerability enables attackers to consume CPU cycles, memory, disk space, or network bandwidth to such an extent that normal system operations become impaired or entirely halted. The attack vector requires only a valid user account, which significantly reduces the barrier to exploitation and makes this vulnerability particularly dangerous in environments where account compromise is possible through various means including credential theft, social engineering, or weak authentication controls. The resource exhaustion effect can cascade through the system, potentially affecting not just Qsync Central itself but also other applications or services running on the same infrastructure.
Organizations should prioritize immediate remediation by upgrading to Qsync Central version 5.0.0.1 or later, which incorporates proper resource allocation limits and throttling mechanisms. The fix addresses the root cause by implementing bounded resource consumption controls that prevent any single user or process from monopolizing system resources. Additionally, security teams should implement monitoring solutions to detect unusual resource consumption patterns that might indicate exploitation attempts, while also reviewing access controls and authentication mechanisms to minimize the risk of unauthorized account access. This vulnerability aligns with ATT&CK technique T1499.004 - Endpoint Denial of Service, which specifically targets resource exhaustion attacks that render systems unavailable to legitimate users. The remediation process should also include comprehensive testing to ensure that the updated resource management controls function properly without introducing performance regressions or compatibility issues with existing workflows.