CVE-2025-8005
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 Cobalt XE File Parsing Type Confusion Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 XE files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26237.
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 confidenceType confusion vulnerability in Ashlar-Vellum Cobalt XE's XE file parser due to insufficient validation of user-supplied data. An attacker can craft a malicious XE file that triggers improper type handling, leading to arbitrary code execution in the context of the current process.
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 dataall versionsCVSS 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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Confirm Ashlar Cobalt installationCheck for Ashlar Cobalt in installed programs: look in Program Files or Program Files (x86) for 'Ashlar' folder, or query registry at HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall for entries containing 'Cobalt' or 'Ashlar'Affected if Ashlar Cobalt software is present on the system
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Identify installed Cobalt versionCheck the program's About or Help menu, or examine the executable properties of the main Cobalt application file (typically Cobalt.exe) by right-clicking and viewing DetailsAffected if Any version of Ashlar Cobalt is installed (all versions are affected)
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Check XE file association and handler registrationExamine file associations: query registry at HKCR\.xe and HKCR\Ashlar.Cobalt.XEFile to see if XE files are registered to open with Cobalt, or check if double-clicking an XE file launches CobaltAffected if XE file type is associated with Cobalt, indicating the parser can be triggered
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Detect XE file processing capabilityCheck if Cobalt's preview or thumbnail generation feature is enabled: look for Cobalt settings that auto-load or preview XE files, or monitor process activity for Cobalt.exe spawning when XE files are accessedAffected if Cobalt can automatically process or preview XE files without explicit user confirmation
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Identify suspicious XE file activityReview recent file access events: check Downloads, Desktop, and shared network folders for XE files, or examine browser download histories and email attachments for recent XE file downloadsAffected if Unexamined XE files from external or untrusted sources exist on the system
You are affected if Ashlar Cobalt is installed and XE files can be processed by the software, regardless of version since all versions are vulnerable.
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 dataUntil vendor patch is available, implement compensating controls: restrict XE file handling to trusted sources, disable file preview features, and deploy endpoint detection for suspicious file operations. User awareness critical given required interaction.
- Consultation8.0 h
- Implementation12.0 h
- Testing4.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-8005 — 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-2025-8005 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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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
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