CVE-2026-103840: Out-of-bounds Read (CWE-125) in Adobe Adobe Substance 3D Stager
Description
Substance3D - Stager is affected by an out-of-bounds read vulnerability when parsing a crafted file, which could result in a read past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute code in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
CVSS v3.1
Score 7.8high
Affected software
Adobe
Adobe Substance 3D Stager
pkg:github/adobe/substance3d-stagerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-103840 is an out-of-bounds read vulnerability in Adobe Substance 3D Stager that arises during parsing of a crafted file. This vulnerability can cause the application to read memory beyond the allocated buffer, which may be leveraged by an attacker to execute arbitrary code in the context of the current user. Successful exploitation requires the victim to open a maliciously crafted file. The affected versions are from 0 through 3.1.8 inclusive. The vulnerability has a CVSS v3.1 base score of 7.8, reflecting high impact on confidentiality, integrity, and availability.
Potential Impact
An attacker who convinces a user to open a malicious file in Adobe Substance 3D Stager could execute arbitrary code with the user's privileges. This could lead to full compromise of the user's environment within the scope of the application permissions. The vulnerability affects confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
No official patch or remediation information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should avoid opening untrusted files in Adobe Substance 3D Stager.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- adobe
- Date Reserved
- 2026-10-01T11:26:24.768Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ace92562cdf04f656a90f5b
Added to database: 10/13/2026, 20:19:34 UTC
Last enriched: 10/13/2026, 20:34:17 UTC
Last updated: 10/13/2026, 21:05:51 UTC
Views: 4
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