Substance3D - Designer is affected by an out-of-bounds write vulnerability that could result in arbitrary code execution in the context of the current user.

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• cpe adobe/substance 3d designerversion unspecified

How to fix CVE-2026-103821

• Recommended remediation

  A patch or advisory reference is linked. Open the original publisher for availability by product version.

• Official advisories

  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • JVN iPedia · jvndb.jvn.jp
  • NIST NVD · nvd.nist.gov

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Oct 13, 2026 · NIST NVD

   Detected

   Substance3D - Designer is 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.

2. Oct 14, 2026 · NIST NVD

   Updated

   Substance3D - Designer is 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.

3. Oct 15, 2026 · NIST NVD

   Updated

   Substance3D - Designer is 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.

Sources

• CVE.orgVulnerability recordCVE-2026-103821

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-103821

  30-day exploitation probability 0.1%

  first.org
• JVN iPediaGovernment advisoryCVE-2026-103821

  Substance3D - Designer は、現在のユーザーのコンテキストで任意のコードが実行される可能性がある、境界外書き込みの脆弱性の影響を受けています。この問題を悪用するためには、被害者が悪意のあるファイルを開くなどのユーザー操作が必要です。

  jvndb.jvn.jp
• NIST NVDVulnerability recordCVE-2026-103821

  Substance3D - Designer is 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.

  nvd.nist.gov

References

• Reference · adobe.com

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.