CVE-2024-49518: Adobe Substance 3D Painter RCE Vulnerability

CVE-2024-49518 Overview

CVE-2024-49518 is an out-of-bounds write vulnerability [CWE-787] affecting Adobe Substance 3D Painter versions 10.1.0 and earlier. The flaw allows arbitrary code execution in the context of the current user when a victim opens a malicious file. Adobe disclosed the vulnerability in security bulletin APSB24-86 on November 12, 2024.

Exploitation requires local access and user interaction, limiting mass exploitation but posing risk in targeted attacks against creative professionals, game studios, and design firms that process untrusted 3D asset files.

Critical Impact
Successful exploitation results in arbitrary code execution with the privileges of the logged-in user, enabling attackers to install malware, exfiltrate project files, or pivot deeper into corporate creative pipelines.

Affected Products

Adobe Substance 3D Painter version 10.1.0
Adobe Substance 3D Painter all prior versions
Windows and macOS installations of the affected releases

Discovery Timeline

2024-11-12 - Adobe publishes security advisory APSB24-86
2024-11-12 - CVE-2024-49518 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-49518

Vulnerability Analysis

CVE-2024-49518 is classified as an out-of-bounds write, mapped to [CWE-787]. Substance 3D Painter parses complex file formats including textures, meshes, and project files. During parsing, the application writes data past the boundary of an allocated buffer. An attacker who controls the file contents can corrupt adjacent memory structures and steer execution flow.

The attack vector is local, requiring a victim to open a crafted file. No authentication is needed, and the attacker inherits the privileges of the current user. Impact spans confidentiality, integrity, and availability, since arbitrary code execution enables full application-level compromise.

Root Cause

The root cause is insufficient bounds checking during file deserialization within Substance 3D Painter. The parser trusts size or offset fields inside the malicious asset without validating them against the destination buffer size. This mismatch permits writes outside the intended memory region.

Attack Vector

Attackers deliver the malicious file through phishing emails, compromised asset marketplaces, or shared project repositories. When the victim opens the file in Substance 3D Painter, the vulnerable parser processes attacker-controlled data and triggers the out-of-bounds write. Attackers can weaponize the corruption to overwrite function pointers or virtual tables, achieving arbitrary code execution.

No verified public proof-of-concept exists at this time. Refer to the Adobe Security Advisory APSB24-86 for vendor guidance.

Detection Methods for CVE-2024-49518

Indicators of Compromise

Unexpected child processes spawned by Adobe Substance 3D Painter.exe, particularly shells, scripting engines, or rundll32.exe
Substance 3D Painter crashes correlated with the opening of externally sourced .spp, .sbsar, or texture files
Outbound network connections initiated by the Substance 3D Painter process to non-Adobe endpoints
Newly created executables or scripts in user-writable directories immediately after a Painter session

Detection Strategies

Monitor process lineage where Substance 3D Painter is the parent process; legitimate use rarely spawns interpreters or system binaries
Deploy YARA rules that flag anomalous structural fields in .spp project archives received from external sources
Alert on Substance 3D Painter application crashes reported by Windows Error Reporting or macOS CrashReporter
Correlate file-open telemetry with subsequent unusual DLL loads or memory allocations in the Painter process

Monitoring Recommendations

Log file-open events for Substance 3D Painter and enrich with the source of the file (email attachment, download, USB, shared drive)
Track version inventory of Substance 3D Painter across endpoints to identify unpatched installations at 10.1.0 or earlier
Watch for lateral movement or credential access activity originating from workstations used by 3D artists, a population often outside standard EDR scoping

How to Mitigate CVE-2024-49518

Immediate Actions Required

Upgrade Adobe Substance 3D Painter to version 10.1.1 or later as directed in advisory APSB24-86
Restrict opening of Substance 3D project files sourced from untrusted third parties, marketplaces, or unsolicited email
Enforce application allowlisting to prevent Painter from launching unexpected child processes
Prioritize patching on workstations used by artists and studios that regularly ingest external assets

Patch Information

Adobe released fixed builds alongside advisory APSB24-86 on November 12, 2024. Users must update through the Adobe Creative Cloud desktop application or download the latest installer directly from Adobe. Consult the Adobe Security Advisory APSB24-86 for the exact fixed version and download links.

Workarounds

Only open Substance 3D Painter files received from verified, trusted sources
Run Substance 3D Painter under a standard user account, never with administrative privileges
Sandbox or isolate asset-review workstations from production networks until patches are applied
Enable operating system exploit mitigations such as Data Execution Prevention (DEP) and Control Flow Guard (CFG)

bash

# Verify installed Substance 3D Painter version on Windows
reg query "HKLM\SOFTWARE\Adobe\Substance 3D Painter" /v Version

# Verify installed Substance 3D Painter version on macOS
defaults read "/Applications/Adobe Substance 3D Painter/Adobe Substance 3D Painter.app/Contents/Info.plist" CFBundleShortVersionString