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Multimedia ConsoleApplication · Qnap

CVE-2023-23364

CRITICAL · 9.8 CVSS v3.1 Published 2023-09-22
Fix available
A fix is available. Upgrade to 1.4.7 / 2.1.1 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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 copy without checking size of input vulnerability has been reported to affect QNAP operating systems. If exploited, the vulnerability possibly allows remote users to execute code via unspecified vectors. We have already fixed the vulnerability in the following versions: Multimedia Console 2.1.1 ( 2023/03/29 ) and later Multimedia Console 1.4.7 ( 2023/03/20 ) 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 · high confidence

A buffer overflow vulnerability in QNAP Multimedia Console allows remote attackers to execute arbitrary code via a buffer copy operation without proper size validation. This critical RCE flaw affects the Multimedia Console application on QNAP NAS devices.

MitigationUpdate Multimedia Console to version 2.1.1 or later (2.x branch) or 1.4.7 or later (1.x branch). If immediate patching is not feasible, restrict network access to the Multimedia Console service and implement additional network segmentation controls.

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
Multimedia ConsoleApplication
Affected:< 1.4.7>= 2.0.0, < 2.1.1

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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. Identify Multimedia Console version
    Locate and retrieve the installed version of QNAP Multimedia Console on the NAS device (typically found in App Center or via command line package query)
    Affected if The version is less than 1.4.7, or greater than or equal to 2.0.0 but less than 2.1.1
  2. Confirm 1.x branch version if applicable
    If running a 1.x version of Multimedia Console, verify the exact minor/patch version number
    Affected if The version is 1.4.6 or any earlier 1.x release (1.4.6, 1.4.5, etc.)
  3. Confirm 2.x branch version if applicable
    If running a 2.x version of Multimedia Console, verify the exact minor/patch version number
    Affected if The version is 2.0.0 through 2.1.0 inclusive (2.0.0, 2.0.1, 2.1.0)
  4. Check if Multimedia Console service is enabled
    Verify whether the Multimedia Console application is currently installed and active on the QNAP device
    Affected if The application is installed and running, and the version falls within the affected ranges identified above

A QNAP device is affected if Multimedia Console is installed with a version less than 1.4.7 (1.x branch) or between 2.0.0 and 2.1.1 (2.x branch, exclusive of 2.1.1).

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 1.4.7 / 2.1.1 or later
Fixed in 1.4.72.1.1
Interim mitigation

Update Multimedia Console to version 2.1.1 or later (2.x branch) or 1.4.7 or later (1.x branch). If immediate patching is not feasible, restrict network access to the Multimedia Console service and implement additional network segmentation controls.

Recommended fix High confidence

Multimedia Console 1.4.7 (for 1.x line) or 2.1.1 (for 2.x line) and later

  1. 1. Identify your current Multimedia Console version by logging into QNAP QTS and navigating to App Center > Multimedia Console > Version
  2. 2. If running version < 1.4.7, download Multimedia Console version 1.4.7 or later from QNAP App Center
  3. 3. If running version >= 2.0.0 and < 2.1.1, download Multimedia Console version 2.1.1 or later from QNAP App Center
  4. 4. Install the updated version through the QNAP interface or QNAP Helpdesk utility
  5. 5. Verify the installed version matches the fixed release (1.4.7+ or 2.1.1+)

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

Fix this in Multimedia Console Scoped from the published advisory
  • Consultation4.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA2.0 h
11.0 hours of engineering $2,000
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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-2023-23364 in production — separate from our analysis above.

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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