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License CenterApplication · Qnap

CVE-2025-53597

MEDIUM · 6.5 CVSS v3.1 Published 2026-01-02
Fix available
A fix is available. Upgrade to 2.0.36 or later.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A buffer overflow vulnerability has been reported to affect License Center. If a remote attacker gains an administrator account, they can then exploit the vulnerability to modify memory or crash processes. We have already fixed the vulnerability in the following version: License Center 2.0.36 and later

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A buffer overflow vulnerability in QNAP License Center allows an authenticated administrator to modify memory or crash processes. The attacker first needs to obtain administrator credentials before exploiting the buffer overflow.

MitigationUpgrade License Center to version 2.0.36 or later. If immediate upgrade is not possible, restrict administrative access and monitor for suspicious admin account activity.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
License CenterApplication
Affected:>= 2.0.17, < 2.0.36

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm QNAP License Center is installed
    Access the QNAP admin interface (usually http://QNAP_IP:8080 or https://QNAP_IP:8081), navigate to App Center or System Settings, and look for 'License Center' in the installed applications list.
    Affected if License Center is not found in the installed applications, the system is not affected by this specific vulnerability.
  2. Find the installed version of License Center
    In the QNAP admin interface, go to App Center, locate License Center, and click on it to view the version information. The version number is typically displayed in the application details panel.
    Affected if The displayed version number is within the range 2.0.17 through 2.0.35 (anything less than 2.0.36).
  3. Verify administrator access controls
    Review user accounts in the QNAP admin panel under 'Control Panel' > 'Privilege' > 'Users'. Check if there are any unexpected administrator accounts or signs of credential compromise.
    Affected if Unrecognized administrator accounts exist or credentials may be compromised, indicating potential exploitation attempt.
  4. Check for suspicious admin activity
    Review the System Event Log in 'Control Panel' > 'System Logs' > 'System Events' for any admin login events from unusual IP addresses or at unusual times.
    Affected if There are admin login events from unknown sources, which could indicate the prerequisite for exploitation has been met.

The system is affected if QNAP License Center version 2.0.17 through 2.0.35 is installed and the attacker has obtained administrator credentials.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2.0.36 or later
Fixed in 2.0.36
Interim mitigation

Upgrade License Center to version 2.0.36 or later. If immediate upgrade is not possible, restrict administrative access and monitor for suspicious admin account activity.

Recommended fix High confidence

License Center 2.0.36

  1. Log in to QTS or QuTS hero as administrator
  2. Open the App Center
  3. Locate License Center in the installed applications
  4. Check the current version to confirm it is below 2.0.36
  5. Update License Center to version 2.0.36 or later via the App Center update function

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in License Center Scoped from the published advisory
  • Consultation3.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,770
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,832.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-53597 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data