CVE-2026-34676
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 - Painter versions 12.0.2 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 confidenceSubstance3D Painter versions 12.0.2 and earlier contain an out-of-bounds write vulnerability that can be triggered by opening a malicious file, potentially allowing arbitrary code execution in the context of the current user.
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< 12.0.3CVSS 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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Determine installed version of Adobe Substance 3D PainterOpen the application, then navigate to Help > About Adobe Substance 3D Painter. The version number is displayed in the dialog that appears.Affected if The reported version is 12.0.2 or earlier, or any version below 12.0.3
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Verify version via system application informationOn Windows, right-click the executable or shortcut, select Properties, and check the Details tab for the product version. On macOS, right-click the application in Finder, select Get Info, and check the Version field.Affected if The version shown is below 12.0.3
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Confirm Adobe Creative Cloud version listingOpen the Adobe Creative Cloud desktop application, locate Adobe Substance 3D Painter in the installed apps list, and check the version number displayed.Affected if The listed version is 12.0.2 or earlier
You are affected if Adobe Substance 3D Painter is installed and its installed version is below 12.0.3.
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 · scoped12.0.3
Apply vendor-supplied patches when available; avoid opening untrusted or unsolicited files in Substance3D Painter until the software is updated.
Substance 3D Painter 12.0.3
- Close any running instances of Adobe Substance 3D Painter
- Back up important projects and custom presets as a precaution
- Navigate to the official Adobe support page at helpx.adobe.com
- Download Adobe Substance 3D Painter version 12.0.3 or later
- Run the installer and follow the on-screen prompts to complete the installation
- Launch the application and verify the version by checking Help > About to confirm version 12.0.3 or higher is installed
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-34676 — 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-2026-34676 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