CVE-2025-30322: Out-of-Bounds Write Vulnerability in Substance3D Painter Leading to Arbitrary Code Execution

Overview

In this blog post, we delve into a critical cybersecurity vulnerability identified as CVE-2025-30322. This cybersecurity flaw affects Substance3D – Painter applications, versions 11.0 and earlier. The vulnerability is an out-of-bounds write issue that could potentially allow an attacker to execute arbitrary code within the context of the current user. This vulnerability is of significant concern because it could potentially result in system compromise or data leakage, therefore posing a substantial threat to the confidentiality, integrity, and availability of user data and system resources.

Vulnerability Summary

CVE ID: CVE-2025-30322
Severity: High (CVSS: 7.8)
Attack Vector: Local
Privileges Required: None
User Interaction: Required
Impact: Arbitrary code execution, potential system compromise, and data leakage

Affected Products

Product | Affected Versions

Substance3D Painter | 11.0 and earlier

How the Exploit Works

The CVE-2025-30322 vulnerability takes advantage of an out-of-bounds write flaw in Substance3D – Painter. This flaw can be exploited when a user opens a malicious file. The process of opening the file triggers the vulnerability, leading to arbitrary code execution. This code runs within the context of the current user, potentially compromising the system or leading to data leakage.

Conceptual Example Code

The following pseudocode conceptually illustrates how this vulnerability might be exploited:

# Define malicious payload
malicious_payload = {
"buffer_overflow": "arbitrary code"
}
# User opens malicious file
def open_file(file):
buffer = []
for line in file:
# Out-of-bounds write vulnerability triggered here
buffer.append(line)
# Execute arbitrary code in the context of current user
def exploit_vulnerability(payload):
open_file(payload)
# Exploit the vulnerability
exploit_vulnerability(malicious_payload)

It’s important to note that the above code is a conceptual representation and may not directly apply to the specific workings of the Substance3D Painter software. It’s meant to provide a general understanding of what an exploit might look like.

How to Mitigate CVE-2025-30322 Vulnerability

The most effective mitigation for the CVE-2025-30322 vulnerability is to apply the vendor-issued patch. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation measures. These systems can detect and block attempts to exploit the vulnerability. Nonetheless, applying the patch should be prioritized to ensure the most robust protection.
As always, users are encouraged to be cautious when opening files, especially from unknown or untrusted sources, as part of good cybersecurity hygiene.