CVE-2025-39436
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 · uneditedUnrestricted Upload of File with Dangerous Type vulnerability in aidraw I Draw idraw allows Using Malicious Files.This issue affects I Draw: from n/a through <= 1.0.
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 confidenceThe 'aidraw I Draw idraw' application has an unrestricted file upload vulnerability allowing attackers to upload files with dangerous types (e.g., executable scripts, webshells) without proper validation. Due to the CVSS 9.1 score and 'dangerous type' classification, the uploaded malicious files can likely be executed by the server, leading to remote code execution and complete system compromise.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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.
-
Identify if I Draw (idraw) from aidraw is deployedSearch for application files, processes, or services associated with 'idraw' or 'aidraw' in your environment. Check for web application directories or running services by this name.Affected if The application is present and running in your environment.
-
Locate the file upload functionalityExamine the application's web routes, API endpoints, or UI components for upload-related paths (e.g., /upload, /file/upload, or similar). Review the application's source code or configuration for upload handlers.Affected if The application exposes an upload endpoint or feature.
-
Inspect file type validation logicReview the upload handler code to determine if it implements file type validation. Look for allowlists that explicitly permit safe file types, or check if dangerous extensions (e.g., .php, .jsp, .exe, .py, .sh) are blocked.Affected if There is no allowlist-based validation, or dangerous file types are not explicitly rejected.
-
Check where uploaded files are storedExamine the upload handler's storage configuration to determine the save location. Identify if uploads are stored inside the webroot (publicly accessible) or outside the webroot.Affected if Uploaded files are stored within the webroot and accessible via HTTP.
-
Verify script execution is disabled in upload directoriesCheck web server configuration (e.g., Apache .htaccess, Nginx config) or application settings for directives that disable script execution (e.g., SetHandler, php_flag engine off) in upload directories.Affected if Script execution is not disabled in the upload storage directory.
If the I Draw (idraw) application is deployed with an accessible upload feature that lacks allowlist-based file type validation and stores files in a web-accessible location with script execution enabled, the environment is affected by CVE-2025-39436.
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 dataImplement strict server-side allowlist validation for file types (extension and MIME), store uploads outside the web root with randomized filenames, and disable script execution in upload directories.
- 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-2025-39436 — 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-2025-39436 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data