CVE-2024-21824
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 · uneditedImproper authentication vulnerability in exists in multiple printers and scanners which implement Web Based Management provided by BROTHER INDUSTRIES, LTD. If this vulnerability is exploited, a network-adjacent user who can access the product may impersonate an administrative user. As for the details of affected product names, model numbers, and versions, refer to the information provided by the respective vendors listed under [References].
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 confidenceImproper authentication in Brother Web Based Management allows network-adjacent attackers to impersonate administrative users, likely through manipulation of authentication mechanisms in the web interface.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- Adjacent
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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 checksWork through these to decide whether this CVE applies to you.
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Identify the Brother device modelLocate the model number on the device label or print a configuration page. This identifies if it is a Brother printer or scanner that includes Web Based Management.Affected if The device is a Brother printer or scanner model that supports Web Based Management.
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Confirm Web Based Management is enabledAccess the device control panel or print a configuration page. Look for network settings or web interface status. Alternatively, attempt to access http://[device-ip] in a browser to see if the login page loads.Affected if Web Based Management interface is accessible and loads a login page.
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Check the installed firmware versionIn the Web Based Management interface, navigate to the General or Information page to view the firmware version. Alternatively, print a configuration page from the device which typically displays the firmware version.Affected if The firmware version matches or falls within the affected version range for this CVE (compare your installed version to the affected ranges published by Brother for this vulnerability).
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Assess network exposureDetermine if the device Web Based Management interface is accessible from network segments beyond the intended local administrative network. Check router/firewall rules and VLAN configuration.Affected if The Web Based Management interface is reachable from network segments where untrusted or non-administrative users have access (network-adjacent attackers).
You are affected if you have a Brother device with Web Based Management enabled, the firmware version falls within the affected range, and the interface is accessible to network-adjacent attackers.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataApply available firmware updates from Brother Industries for affected printer and scanner models; network segmentation can limit attack surface as a compensating control.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-21824 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2024-21824 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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