CVE-2026-21299
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 · uneditedSubstance3D - Modeler versions 1.22.4 and earlier are affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
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 confidenceAdobe Substance3D Modeler versions 1.22.4 and earlier contain an out-of-bounds write vulnerability in file parsing logic. Successful exploitation allows arbitrary code execution in the context of the current user, triggered by opening a specially crafted malicious file.
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< 1.22.5CVSS 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:3.1/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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Verify Adobe Substance3D Modeler is installedCheck for the application on Windows in 'C:\Program Files\Adobe\Adobe Substance 3D Modeler' or on macOS in '/Applications/Adobe Substance 3D Modeler'. On Windows, also check Add or Remove Programs list.Affected if The software is present on the system
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Determine the installed version numberOn Windows, right-click the executable (Substance3DModeler.exe) and select Properties > Details to view the File Version. On macOS, right-click the application, select Get Info, and note the Version field.Affected if A version number is found that is less than 1.22.5
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Confirm the vulnerable file parsing component is accessibleThe vulnerability is triggered through the file opening functionality - verify the application can open model files (.s3d, .obj, .fbx, .gltf, .glb, .stl). Attempt to open any existing model file to confirm the file parsing feature is functional.Affected if The file parsing feature is functional and can open model files
You are affected if Adobe Substance3D Modeler is installed with a version lower than 1.22.5 and the application can open model 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.
dbcve · scoped1.22.5
Users should refrain from opening untrusted or unexpected files in Substance3D Modeler. Apply vendor patches when released to address this vulnerability.
1.22.5
- Upgrade Substance 3D Modeler to version 1.22.5 or later
- Verify the upgrade by checking the application version in the Help > About menu
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,960.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-21299 — 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-2026-21299 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
- No spam, self-promotion, credentials, or personal data