CVE-2023-44439
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 · uneditedAshlar-Vellum Xenon Uncontrolled Search Path Element Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Xenon. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of various file types. The process loads a library from an unsecured location. An attacker can leverage this vulnerability to execute code in the context of the current process. . Was ZDI-CAN-21679.
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 confidenceAshlar-Vellum Xenon contains an uncontrolled search path element vulnerability in its file parsing functionality. The application loads dynamic link libraries from an unsecured location that can be controlled by an attacker. When a user opens a malicious file or visits a malicious page, the application inadvertently loads and executes a malicious DLL in the context of the current process, enabling remote 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= 12.0.1204.68CVSS 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
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/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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Check installed Ashlar Xenon versionOpen Ashlar Xenon, go to Help > About or check the program's version property in Windows ExplorerAffected if Version is exactly 12.0.1204.68 (this is the only affected version listed)
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Verify application directory is trustedConfirm the Ashlar Xenon executable (Xenon.exe) is run from a directory that only privileged users can write to, such as Program FilesAffected if The application executable is located in a user-writable directory like Downloads or Desktop
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Inspect DLL loading behaviorUse Process Monitor or a similar tool to monitor DLL loads when opening a file in Ashlar Xenon; look for DLLs loaded from the current working directory or unexpected pathsAffected if The application loads DLLs from locations writable by non-privileged users or the current directory
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Check for unsafe library search pathsReview the application's configuration files and executable properties to identify if library search paths allow loading from relative or unsecured pathsAffected if The application does not use secure library loading (absolute paths, manifest-based binding, or explicit path specifications)
A user is affected only if they have Ashlar Xenon version 12.0.1204.68 running from an untrusted directory or if the application loads DLLs from unsecured paths.
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 dataUsers should avoid opening files from untrusted sources and ensure the application is run from trusted directories. Organizations should review library loading paths in the application and implement secure library loading mechanisms (absolute paths, manifest-based binding, or explicit path specifications).
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-44439 — 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-2023-44439 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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