CVE-2018-7771
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 · uneditedThe vulnerability exists within processing of editscript.php in Schneider Electric U.motion Builder software versions prior to v1.3.4. A directory traversal vulnerability allows a caller with standard user privileges to write arbitrary php files anywhere in the web service directory tree.
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 confidenceA directory traversal vulnerability in editscript.php of Schneider Electric U.motion Builder (versions prior to 1.3.4) allows authenticated standard users to write arbitrary PHP files to any location within the web service directory tree.
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< 1.3.4CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/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 U.motion Builder installation and versionLocate the U.motion Builder installation directory and check the version file or application metadata. Common locations include the installation root directory or web server document root. Look for version indicators such as a version.php file, version in the application header, or check the software itself.Affected if The installed version is prior to 1.3.4 (e.g., 1.3.3, 1.3.2, 1.3.1, 1.3.0, or earlier)
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Locate editscript.php fileSearch for the editscript.php file within the web service directory tree of the U.motion Builder installation. This file is the vulnerable component that handles script editing.Affected if The file editscript.php exists in the web directory, indicating the vulnerable script is present
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Verify web service is accessibleConfirm that the U.motion Builder web interface is running and accessible over HTTP/HTTPS. The directory traversal flaw is exploitable through the web application.Affected if The web service is running and the application is network-accessible
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Confirm authenticated user access existsReview user accounts in the U.motion Builder system to determine if standard (non-administrator) user accounts exist. The vulnerability requires an authenticated standard user to exploit the flaw.Affected if Standard user accounts with script editing permissions are configured in the system
A system is affected if U.motion Builder version is prior to 1.3.4, the editscript.php file exists, the web service is running, and standard user accounts are present in the system.
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 data1.3.4
Upgrade to U.motion Builder v1.3.4 or later, which contains the security fix for this vulnerability.
- 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-2018-7771 — 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-2018-7771 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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