dbcve.org
QtsOperating system · Qnap

CVE-2024-37049

MEDIUM · 6.5 CVSS v3.1 Published 2024-11-22
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
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 copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow remote attackers who have gained administrator access to execute code. We have already fixed the vulnerability in the following versions: QTS 5.2.1.2930 build 20241025 and later QuTS hero h5.2.1.2929 build 20241025 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 copy without checking size of input vulnerability (buffer overflow) in QNAP QTS and QuTS hero operating systems allows remote attackers who have already gained administrator-level access to execute arbitrary code. The vulnerability stems from insufficient bounds checking when copying input data into a fixed-size buffer.

MitigationApply the available firmware updates: QTS 5.2.1.2930 build 20241025 or later, or QuTS hero h5.2.1.2929 build 20241025 or later. Prioritize systems with existing administrator access compromise.

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
QtsOperating system
Affected:= 5.2.0.2737= 5.2.0.2744= 5.2.0.2782= 5.2.0.2802= 5.2.0.2823= 5.2.0.2851= 5.2.0.2860
Quts HeroOperating system
Affected:= h5.2.0.2737= h5.2.0.2782= h5.2.0.2789= h5.2.0.2802= h5.2.0.2823= h5.2.0.2851= h5.2.0.2860

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. Identify the QNAP OS version
    Access the QNAP admin console, go to Control Panel > System > Firmware, or run `grep -i version /etc/os-release` via SSH to determine if the system runs QTS or QuTS hero
    Affected if The system runs QTS or QuTS hero
  2. Check the exact build version
    In the admin console, navigate to Control Panel > System > Firmware > Build Number, or run `getconf APP_VERSION` via SSH to obtain the precise build number
    Affected if The build number matches 5.2.0.2737, 5.2.0.2744, 5.2.0.2782, 5.2.0.2802, 5.2.0.2823, 5.2.0.2851, or 5.2.0.2860 for QTS; or h5.2.0.2737, h5.2.0.2782, h5.2.0.2789, h5.2.0.2802, h5.2.0.2823, h5.2.0.2851, or h5.2.0.2860 for QuTS hero
  3. Verify administrator account integrity
    Review admin users in Control Panel > Privilege > Users, check for unauthorized accounts or privilege escalation indicators, and audit /etc/passwd and /etc/shadow via SSH for unexpected accounts with UID 0 or administrator group membership
    Affected if Unauthorized administrator accounts exist or unexpected privilege escalation is detected
  4. Examine running processes for exploitation indicators
    Run `ps aux` and review for suspicious processes, particularly those spawning from web server processes or network-facing services that handle input data
    Affected if Unfamiliar processes are running, especially those associated with the web server or network services component

A system is affected if it runs QTS or QuTS hero with a build version matching the specific affected builds listed and the attacker has already obtained administrator-level access to the device.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the available firmware updates: QTS 5.2.1.2930 build 20241025 or later, or QuTS hero h5.2.1.2929 build 20241025 or later. Prioritize systems with existing administrator access compromise.

Recommended fix High confidence

QTS 5.2.1.2930 build 20241025 or later / QuTS hero h5.2.1.2929 build 20241025 or later

  1. 1. Log in to the QNAP admin interface (QTS or QuTS hero) as administrator
  2. 2. Navigate to Control Panel > System > Firmware Update
  3. 3. Click 'Check for Update' to ensure you have the latest available update
  4. 4. If update 5.2.1.2930 (QTS) or 5.2.1.2929 (QuTS hero) or later is available, click to install it
  5. 5. Wait for the update to complete - do not power off the NAS during the process
  6. 6. After reboot, verify the new version by checking Control Panel > System > Firmware Update > Firmware Information
Caveat Review QNAP release notes for any compatibility notes before upgrading

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

Fix this in Qts Scoped from the published advisory
  • Consultation2.0 h
  • Implementation3.0 h
  • Testing2.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,420
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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-2024-37049 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