CVE-2023-39944
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 WRC-F1167ACF all versions, and WRC-1750GHBK all versions allows an attacker who can access the product to execute an arbitrary OS command by sending a specially crafted request.
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 WRC-F1167ACF and WRC-1750GHBK Wi-Fi range extenders. An attacker with product access can send specially crafted requests to execute arbitrary OS commands, likely due to unsanitized user input being passed to system calls.
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 dataall versionsall versionsCVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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 device modelLog into the device web interface or check the device label to confirm the exact model is WRC-F1167ACF or WRC-1750GHBKAffected if Device is either Elecom WRC-F1167ACF or WRC-1750GHBK
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Check firmware versionNavigate to the device administration page, typically at / or /index.asp, and locate the firmware version information usually found under System or Status settingsAffected if Any firmware version is installed (all versions are affected)
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Verify web interface exposureDetermine if the device web management interface (HTTP/HTTPS on ports 80 or 443) is accessible from untrusted networks by attempting to access the device IP from an external hostAffected if Web interface is exposed to untrusted networks
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Inspect web server logsAccess device diagnostics or system logs if available, looking for unusual HTTP requests with shell metacharacters or suspicious parameter patternsAffected if Logs contain requests with special characters typical of command injection attempts
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Check for signs of compromiseIf SSH or telnet access is enabled on the device, run 'ps' to list running processes and check for unexpected binaries or 'netstat' to list unusual network connectionsAffected if Unexpected processes or outbound connections to unknown hosts are present
The device is affected if it is an Elecom WRC-F1167ACF or WRC-1750GHBK with any firmware version and its web interface is accessible to potential 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 dataSince all versions are affected with no patch available, immediately restrict network access to these devices via firewall rules or network segmentation; consider replacing with supported hardware. If the device must remain in production, implement strict access controls and monitor for exploitation attempts.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-39944 — 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-2023-39944 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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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.
- 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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