CVE-2024-34577
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 · uneditedCross-site scripting vulnerability exists in WRC-X3000GS2-B, WRC-X3000GS2-W, WRC-X3000GS2A-B and WRC-X3000GST2-B due to improper processing of input values in easysetup.cgi. If a user views a malicious web page while logged in to the product, an arbitrary script may be executed on the user's web browser.
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 confidenceCross-site scripting (XSS) vulnerability in Buffalo WRC-X3000GS2 series wireless routers. The easysetup.cgi script fails to properly sanitize input values, allowing an attacker to inject malicious JavaScript that executes in the context of an authenticated user's browser session.
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<= 1.08<= 1.08<= 1.08CVSS 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 your router modelCheck the product label or web interface for the exact model number (e.g., WRC-X3000GS2, WRC-X3000GS2A) and variant (B or W)Affected if Model is Elecom Wrc X3000gs2 B, Wrc X3000gs2 W, or Wrc X3000gs2a B
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Check firmware versionLog into the router web interface and navigate to the System or Administration section to view the firmware version; alternatively, check the label on the device itselfAffected if Firmware version is 1.08 or lower
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Verify web management interface is enabledAccess the router admin panel and confirm the web-based management interface is active in the settingsAffected if Web management interface is enabled and accessible on HTTP/HTTPS ports
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Confirm easysetup.cgi is present and accessibleAttempt to access the easysetup.cgi script via the router's web interface (typically at /cgi-bin/easysetup.cgi)Affected if The script responds and accepts user input without proper sanitization
You are affected if your device is one of the three listed models, runs firmware version 1.08 or lower, and has the web management interface enabled with the easysetup.cgi script accessible.
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 when available; until then, disable the web management interface if not needed and advise users to avoid clicking untrusted links while logged into the router admin panel.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-34577 — 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-2024-34577 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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