CVE-2022-43443
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 · uneditedOS command injection vulnerability in Buffalo network devices allows an network-adjacent attacker to execute an arbitrary OS command if a specially crafted request is sent to the management page.
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 confidenceOS command injection vulnerability in Buffalo network devices enables a network-adjacent attacker to execute arbitrary OS commands by sending specially crafted requests to the management web interface. The vulnerability stems from insufficient input validation allowing command injection via the management page.
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<= 1.26= 1.25<= 1.22<= 1.22<= 1.26<= 1.26<= 1.03<= 1.07CVSS 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
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/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 checksWork through these to decide whether this CVE applies to you.
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Identify the device modelAccess the router's web interface or check the device label to confirm it is a Buffalo WSR series router (Wsr 3200ax4s, Wsr 3200ax4b, Wsr 2533dhp2, Wsr A2533dhp2, Wsr 2533dhp3, Wsr A2533dhp3, Wsr 2533dhpl2, or Wsr 2533dhpls).Affected if The device is any of these Buffalo WSR models.
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Check the firmware versionLog into the router's management web interface and navigate to the firmware or system status page to view the installed firmware version. Alternatively, check the Buffalo support site for your model to determine the current version.Affected if The firmware version is within the affected ranges: Wsr 3200ax4s <= 1.26, Wsr 3200ax4b = 1.25, Wsr 2533dhp2 <= 1.22, Wsr A2533dhp2 <= 1.22, Wsr 2533dhp3 <= 1.26, Wsr A2533dhp3 <= 1.26, Wsr 2533dhpl2 <= 1.03, or Wsr 2533dhpls <= 1.07.
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Verify if the management web interface is accessibleAttempt to access the router's web interface from a network-connected host by navigating to the default IP address (commonly 192.168.1.1 or 192.168.11.1). Confirm the interface responds to HTTP/HTTPS requests.Affected if The management web interface is reachable from the network, as the vulnerability is exploited through specially crafted HTTP requests to this interface.
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Confirm management interface does not restrict accessCheck the router's access control settings to determine if the management interface is open to unrestricted network access or if it is limited to trusted IP addresses only.Affected if The management interface is open to network-adjacent attackers without IP restrictions, making the command injection exploit accessible.
The environment is affected if the device is a Buffalo WSR model listed above AND the firmware version matches the affected ranges AND the management web interface is accessible from the network.
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 dataRestrict network access to the management interface to trusted IPs only, apply vendor firmware updates when available, and consider network segmentation to limit exposure to untrusted network segments.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-43443 — 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-2022-43443 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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