CVE-2025-54149Network attack vector

Authenticated service interruption via undisclosed resource consumption

Published Feb 11, 2026 · Updated Feb 11, 2026

Uncontrolled resource consumption in QNAP Qsync Central before 5.0.0.4 allows remote authenticated users to interrupt the service. QNAP has not disclosed the affected resource, code locus, or operation that consumes it without an effective limit. A low-privileged account is required; only availability is affected, and QNAP does not specify whether exploitation causes a hang or crash.

CVSS severity7.1
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Uncontrolled resource consumption in QNAP Qsync Central before 5.0.0.4 allows remote authenticated users to interrupt the service. QNAP has not disclosed the affected resource, code locus, or operation that consumes it without an effective limit. A low-privileged account is required; only availability is affected, and QNAP does not specify whether exploitation causes a hang or crash.

The record

CVE
CVE-2025-54149
Published
Feb 11, 2026
Updated
Feb 11, 2026
Vendor
Linn Products Limited
Product
Qsync Central
Classifications
CWE-789, CWE-400, CWE-770, CAPEC-119, CAPEC-130, CAPEC-227, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.0.x.x <5.0.0.4 ( 2026/01/20 )

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · Qsync Centralversion=5.0.x.x <5.0.0.4 ( 2026/01/20 )

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1QNAP Systems, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-789Memory Allocation with Excessive Size Value
CWE-400Uncontrolled Resource Consumption
CWE-770Allocation of Resources Without Limits or Throttling
CAPEC-119DEPRECATED: Deplete Resources
CAPEC-130Excessive Allocation
CAPEC-227Sustained Client Engagement
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo