CVE-2011-4880
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 · uneditedDirectory traversal vulnerability in the web server in Certec atvise webMI2ADS (aka webMI) before 2.0.2 allows remote attackers to read arbitrary files via a crafted HTTP 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 · high confidenceDirectory traversal vulnerability in the web server component of Certec atvise webMI2ADS (webMI) versions prior to 2.0.2 allows remote attackers to read arbitrary files on the host system by using crafted HTTP requests with '../' sequences to navigate outside the web root directory.
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<= 2.0.1= 1.0= 2.0CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/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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Confirm atvise webMI is installedLocate the atvise webMI2ADS installation directory or check running services for the webMI web server process. On Windows, look in Program Files for Certec or atvise directories. On Linux, check /opt or standard application directories.Affected if The product is present on the system and the web server component is running.
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Determine the installed versionInspect version files in the webMI installation directory, typically found in a version.txt, about dialog, or the webMI server executable metadata. Alternatively, access the webMI web interface and look for version information in the login page or help/about section.Affected if The installed version is 2.0.1 or earlier, or specifically versions 1.0 or 2.0.
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Verify the web server is network accessibleAttempt to reach the webMI HTTP interface from a network client using a browser or curl command to the default webMI port (usually port 80 or 8080). Check firewall rules and network configuration to confirm external or unauthorized access is possible.Affected if The web server is exposed on a network interface accessible to potential attackers.
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Check for path traversal vulnerabilitySend a crafted HTTP GET request to the web server with directory traversal sequences such as GET /../../windows/win.ini or GET /../../etc/passwd and observe if the server returns file contents from outside the web root directory.Affected if The server returns file contents from outside the web root in response to traversal sequences, confirming the vulnerability is present and exploitable.
The system is affected if atvise webMI2ADS is installed with version 2.0.1 or earlier (including 1.0 and 2.0) and the web server component is network-accessible, allowing path traversal requests to read arbitrary files.
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 dataUpgrade atvise webMI to version 2.0.2 or later. If upgrading is not immediately possible, restrict network access to the web server and implement input validation to reject HTTP requests containing path traversal sequences.
- Consultation3.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2011-4880 — 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-2011-4880 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
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