CVE-2025-54151: qnap systems inc. qsync central Uncontrolled Resource Consumption

Vulnerability summary

CVE-2025-54151 is a medium (CVSS 5.5) Uncontrolled Resource Consumption vulnerability in qnap systems inc. qsync central. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 18.4% of scored vulnerabilities.

Timeline

1. 11-02-2026
   PublishedVulnerability first disclosed.
2. 11-02-2026
   Last modifiedVulnerability information updated.

Description

An uncontrolled resource consumption vulnerability has been reported to affect Qsync Central. If a local attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) and later

• CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
• CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
• CWE-789Memory Allocation with Excessive Size ValueThe product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.