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Vulnerabilities

Vulnerability · CVE-2025-30261

An allocation of resources without limits or throttling vulnerability has been reported to affect Qsync Central.

Published Aug 29, 2025 · catalog updated Oct 18, 2026 · QNAP Systems Inc. Qsync Central

Last checked Oct 24, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-30261. EPSS is 0.46%. Act only if a listed version of QNAP Systems Inc. Qsync Central is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.46%
Remediation
Version ranges on file
Affected products
cpe qnap/qsync central · vendor QNAP Systems Inc. Qsync Central 5.0.x.x <5.0.0.0 ( 2025/06/13 )

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 5.0.0.0 ( 2025/06/13 ) and later

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe qnap/qsync central5.0.0.0
  • vendor QNAP Systems Inc. Qsync Central 5.0.x.x <5.0.0.0 ( 2025/06/13 )5.0.x.x <5.0.0.0 ( 2025/06/13 )

How to fix CVE-2025-30261

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-30261. EPSS is 0.46%. Act only if a listed version of QNAP Systems Inc. Qsync Central is installed.

Which versions are affected?

Compare what you have installed with qnap/qsync central 5.0.0.0; QNAP Systems Inc. Qsync Central 5.0.x.x <5.0.0.0 ( 2025/06/13 ) 5.0.x.x <5.0.0.0 ( 2025/06/13 ). Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 0.46%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 29, 2025 · NIST NVD

    Detected

    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 5.0.0.0 ( 2025/06/13 ) and la

  2. Oct 18, 2026 · NIST NVD

    Updated

    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 5.0.0.0 ( 2025/06/13 ) and la

Sources

  • CVE.orgVulnerability recordCVE-2025-30261

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-30261

    30-day exploitation probability 0.46%

    first.org
  • EUVDVulnerability recordEUVD-2025-27778

    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

    euvd.enisa.europa.eu
  • NIST NVDVulnerability recordCVE-2025-30261

    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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 24, 2026
  • EUVDOct 22, 2026
  • CVE.orgOct 21, 2026
  • NIST NVDOct 18, 2026