CVE-2023-37561
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 · uneditedOpen redirect vulnerability in ELECOM wireless LAN routers and ELECOM wireless LAN repeaters allows a remote unauthenticated attacker to redirect users to arbitrary web sites and conduct phishing attacks via a specially crafted URL. Affected products and versions are as follows: WRH-300WH-H v2.12 and earlier, WTC-300HWH v1.09 and earlier, WTC-C1167GC-B v1.17 and earlier, and WTC-C1167GC-W v1.17 and earlier.
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 confidenceOpen redirect vulnerability in ELECOM wireless LAN routers and repeaters allows unauthenticated remote attackers to redirect users to arbitrary websites via specially crafted URLs. The vulnerability stems from insufficient validation of redirect parameters in the web interface, enabling phishing attacks.
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<= 2.12<= 1.09<= 1.17<= 1.17CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 ELECOM device modelLocate the model number label on the router or repeater physical device, or access the admin web interface and look for the model information page typically found under Status, System, or Device Information sectionsAffected if The model number is WRH-300WH-H, WTC-300HWH, WTC-C1167GC-B, or WTC-C1167GC-W
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Check the installed firmware versionAccess the router web admin panel (usually at 192.168.1.1 or 192.168.2.1), navigate to the Firmware Upgrade, System, or Status section, and record the firmware version number displayedAffected if The firmware version is 2.12 or lower for WRH-300WH-H, 1.09 or lower for WTC-300HWH, or 1.17 or lower for WTC-C1167GC (both B and W variants)
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Verify web interface is accessibleAttempt to reach the router admin login page over HTTP/HTTPS from a connected deviceAffected if The web management interface is reachable and responds to HTTP requests (the open redirect vulnerability exists in the web interface component)
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Check for redirect parameters in the URLExamine URLs used within the router web interface, particularly any that contain parameters that control page redirection such as 'redirect=', 'url=', 'target=', or similar query parametersAffected if The web interface uses redirect parameters that could be manipulated to point to external domains (the vulnerability stems from insufficient validation of these redirect parameters)
You are affected if your ELECOM router/repeater model is WRH-300WH-H, WTC-300HWH, or WTC-C1167GC (B or W variant) AND the installed firmware version falls at or below the affected version threshold for your specific model.
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 vendor firmware updates as they become available: WRH-300WH-H upgrade beyond v2.12, WTC-300HWH beyond v1.09, and WTC-C1167GC beyond v1.17. Until patches are available, users should avoid clicking untrusted links and verify URL destinations carefully.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-37561 — 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-2023-37561 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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