CVE-2024-49516: Adobe Substance 3D Painter RCE Vulnerability

CVE-2024-49516 Overview

CVE-2024-49516 is an out-of-bounds write vulnerability [CWE-787] affecting Adobe Substance 3D Painter versions 10.1.0 and earlier. The flaw enables arbitrary code execution in the context of the current user when a victim opens a malicious file. Adobe published the vulnerability on November 12, 2024 under security bulletin APSB24-86.

The issue requires local access and user interaction, but it grants attackers full read, write, and execute impact on affected systems. No public proof-of-concept or exploitation in the wild has been reported.

Critical Impact
Successful exploitation leads to arbitrary code execution with the privileges of the user running Adobe Substance 3D Painter.

Affected Products

Adobe Substance 3D Painter 10.1.0 and earlier (Windows)
Adobe Substance 3D Painter 10.1.0 and earlier (macOS)
Adobe Substance 3D Painter 10.1.0 and earlier (Linux)

Discovery Timeline

2024-11-12 - CVE-2024-49516 published to NVD
2024-11-12 - Adobe releases security bulletin APSB24-86
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-49516

Vulnerability Analysis

CVE-2024-49516 is classified as an out-of-bounds write [CWE-787] in Adobe Substance 3D Painter. Out-of-bounds writes occur when software writes data past the end, or before the beginning, of the intended buffer. In native applications that parse complex asset formats, such flaws typically corrupt adjacent heap or stack structures.

An attacker crafts a malicious project or asset file that triggers the write when Painter parses it. The corruption path can be steered into function pointers, virtual tables, or return addresses, giving the attacker control over execution flow. Because Painter runs as the interactive user, the resulting code executes with that user's privileges and inherits access to local files, cloud sync directories, and cached credentials.

The EPSS score is 0.265% at the 18.275 percentile, indicating low observed exploitation activity, though the technical impact remains severe.

Root Cause

The root cause is improper bounds checking during the parsing of an attacker-controlled file structure. The application computes an index or length that exceeds the allocated buffer and writes attacker-influenced data outside its boundary. Adobe has not publicly disclosed the specific parser or asset format at fault.

Attack Vector

Exploitation requires a local attack vector with user interaction. The victim must open a malicious .spp, .spt, or related Substance 3D asset delivered through phishing, a compromised asset marketplace, or a shared project repository. No authentication or elevated privileges are needed to trigger the flaw.

The vulnerability manifests during file parsing. See the Adobe Security Advisory APSB24-86 for vendor-confirmed technical scope.

Detection Methods for CVE-2024-49516

Indicators of Compromise

Unexpected child processes spawned by Adobe Substance 3D Painter.exe, such as cmd.exe, powershell.exe, or bash
Substance 3D Painter crashes correlated with the opening of externally sourced project or asset files
Outbound network connections from the Painter process to non-Adobe infrastructure
Creation of executable files or scheduled tasks by the Painter process

Detection Strategies

Monitor process creation events where the parent is Substance 3D Painter and the child is a shell, scripting host, or LOLBin
Alert on Painter process memory access anomalies and access violation exceptions logged by the operating system
Correlate file-open events for Substance asset formats with subsequent unusual process or network activity

Monitoring Recommendations

Ingest endpoint process, file, and network telemetry into a centralized analytics platform for cross-signal correlation
Track installed versions of Adobe Substance 3D Painter across the fleet and flag any host still running 10.1.0 or earlier
Watch for delivery vectors including email attachments and downloads containing Substance 3D asset files from untrusted origins

How to Mitigate CVE-2024-49516

Immediate Actions Required

Upgrade Adobe Substance 3D Painter to the fixed version identified in Adobe bulletin APSB24-86
Inventory all workstations running Substance 3D Painter and prioritize creative and design teams for patching
Instruct users to avoid opening Substance 3D project or asset files received from unverified sources

Patch Information

Adobe released fixed builds of Substance 3D Painter alongside security bulletin APSB24-86. Administrators should deploy the vendor-provided update to all affected endpoints. No official workaround is documented outside of applying the patch.

Workarounds

Restrict Substance 3D Painter file associations so that arbitrary double-click execution of untrusted asset files is disabled
Run Painter under a standard user account without local administrator rights to constrain post-exploitation impact
Apply application allowlisting to prevent Painter from spawning shells and scripting hosts

bash

# Example: enumerate installed Substance 3D Painter versions on Windows endpoints
Get-ItemProperty "HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*" |
  Where-Object { $_.DisplayName -like "*Substance 3D Painter*" } |
  Select-Object DisplayName, DisplayVersion, InstallLocation