CVE-2018-0522
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 · uneditedBuffer overflow in Buffalo WXR-1900DHP2 firmware Ver.2.48 and earlier allows an attacker to execute arbitrary code via a specially crafted file.
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 confidenceBuffer overflow vulnerability in Buffalo WXR-1900DHP2 router firmware versions 2.48 and earlier allows remote code execution through parsing of a specially crafted file. The overflow occurs during file processing, enabling an attacker to overwrite return addresses on the stack and achieve arbitrary code execution.
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<= 2.48CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/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 firmware versionAccess the router admin interface (typically at 192.168.1.1 or similar) and navigate to the System or Status section to view the firmware version. Alternatively, check the physical device label or backup configuration files for version information.Affected if The installed firmware version is 2.48 or any version lower than 2.48 (e.g., 2.47, 2.46, etc.)
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Determine if file processing features are enabledIn the router admin interface, review any settings related to file upload, configuration import, firmware upload, or network diagnostic file parsing. Look for features that accept files from users or process external files.Affected if Any file processing or file upload functionality is enabled and accessible on the device
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Assess network exposure of the deviceCheck whether the router management interface is accessible from external networks or the internet. Review port forwarding rules, firewall settings, and WAN interface accessibility for ports used by the admin interface (typically HTTP/HTTPS).Affected if The router admin interface or file processing features are reachable from untrusted networks or the internet without restriction
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Check for unusual device behaviorMonitor router logs for any unexpected processes, unfamiliar entries, or signs of attempted exploitation. Look for crashes, restarts, or unfamiliar processes consuming resources.Affected if Logs show unexpected activity, unauthorized access attempts, or the device exhibits unexplained behavior
The device is affected if the installed firmware version is 2.48 or lower and file processing features are accessible, regardless of network exposure level.
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 dataUpdate firmware to a version newer than 2.48. If update unavailable, restrict network access to the device and disable unnecessary file processing features.
- Consultation4.0 h
- Implementation2.0 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-2018-0522 — 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-2018-0522 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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