CVE-2025-61806 Overview
CVE-2025-61806 is an out-of-bounds read vulnerability in Adobe Substance 3D Stager versions 3.1.4 and earlier. The flaw occurs during parsing of crafted files, allowing reads past the end of an allocated memory structure. An attacker can leverage this condition to execute code in the context of the current user.
Exploitation requires user interaction. A victim must open a malicious file delivered through phishing, web download, or other social engineering vectors. The vulnerability affects installations on both Microsoft Windows and Apple macOS platforms and is tracked under CWE-125.
Critical Impact
Successful exploitation results in arbitrary code execution under the privileges of the user running Adobe Substance 3D Stager, with full confidentiality, integrity, and availability impact on the host.
Affected Products
- Adobe Substance 3D Stager versions 3.1.4 and earlier
- Microsoft Windows installations of Substance 3D Stager
- Apple macOS installations of Substance 3D Stager
Discovery Timeline
- 2025-10-14 - CVE-2025-61806 published to NVD
- 2025-10-16 - Last updated in NVD database
Technical Details for CVE-2025-61806
Vulnerability Analysis
The vulnerability resides in the file parsing logic of Adobe Substance 3D Stager. When the application processes a crafted file, the parser fails to enforce correct boundaries on a memory structure. The code reads bytes past the allocated buffer, returning adjacent process memory to attacker-controlled logic.
Out-of-bounds reads of this type can disclose pointers, object metadata, or other heap contents. Attackers chain these primitives with control flow corruption to achieve arbitrary code execution. The advisory confirms that code execution is achievable in the context of the current user, indicating the read primitive can be weaponized beyond information disclosure.
The issue is classified under CWE-125: Out-of-bounds Read. Exploitation requires the attacker to deliver a malicious 3D asset or project file and convince the victim to open it within the vulnerable application.
Root Cause
The root cause is insufficient validation of length or index values within a file-format parser. The parser trusts attacker-controlled fields without bounds checking, causing reads to extend beyond the end of an allocated buffer. Heap layout adjacent to the buffer determines what data is leaked and whether the condition can be escalated to memory corruption.
Attack Vector
The attack vector is local and requires user interaction. An attacker hosts or distributes a crafted Substance 3D Stager-compatible file. When the victim opens the file, the parser triggers the out-of-bounds read inside the application process. No network access or authentication is required, and no privileges on the target system are needed beyond the ability to deliver the file to the victim.
No public proof-of-concept exploit, ExploitDB entry, or CISA KEV listing exists for this CVE at the time of writing.
No verified exploitation code is available. See the Adobe Security Advisory APSB25-104 for vendor technical details.
Detection Methods for CVE-2025-61806
Indicators of Compromise
- Unexpected child processes spawned by Stager.exe (Windows) or the Substance 3D Stager binary on macOS following file open events.
- Substance 3D Stager process crashes or abnormal terminations correlated with opening untrusted .ssa, .sbsar, or related 3D asset files.
- Outbound network connections from the Substance 3D Stager process to unknown hosts shortly after file open.
Detection Strategies
- Monitor process creation telemetry for Substance 3D Stager spawning shells, scripting interpreters, or LOLBins such as powershell.exe, cmd.exe, or osascript.
- Alert on Substance 3D project files arriving via email attachments, browser downloads, or removable media from unverified sources.
- Correlate crash dumps and Windows Error Reporting events for the Substance 3D Stager process with recent file open activity.
Monitoring Recommendations
- Inventory endpoints running Substance 3D Stager and confirm installed versions against the fixed release identified in APSB25-104.
- Apply EDR rules that flag memory access violations and exception events originating in the Substance 3D Stager process.
- Track file write events that drop 3D asset files into user download or temp directories from untrusted sources.
How to Mitigate CVE-2025-61806
Immediate Actions Required
- Upgrade Adobe Substance 3D Stager to the fixed version listed in Adobe Security Bulletin APSB25-104.
- Restrict opening of Substance 3D project and asset files from untrusted email, web, or shared-storage sources until patching is complete.
- Validate the patch deployment across both Windows and macOS endpoints where Substance 3D Stager is installed.
Patch Information
Adobe released the fix in security bulletin APSB25-104. The bulletin identifies the patched version that addresses CVE-2025-61806 along with other vulnerabilities in Substance 3D Stager. Administrators should apply the updated installer through the Adobe Creative Cloud desktop application or through enterprise software distribution tools. Refer to the Adobe Security Advisory for version numbers and download links.
Workarounds
- Block delivery of Substance 3D asset and project file types at the email gateway and web proxy until patches are applied.
- Run Substance 3D Stager under a standard user account to limit the impact of code execution if exploitation occurs.
- Educate users on the risk of opening unsolicited 3D project files and require verification of source before opening.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
