Overview
The CVE-2025-54262 is a critical vulnerability that affects Substance3D – Stager versions 3.1.3 and earlier. The vulnerability allows an attacker to execute arbitrary code in the context of the current user, potentially leading to data leakage or full system compromise. It’s crucial to address this vulnerability due to its high severity and broad impact.
Vulnerability Summary
CVE ID: CVE-2025-54262
Severity: High, CVSS 7.8
Attack Vector: File-based
Privileges Required: None
User Interaction: Required
Impact: Potential execution of arbitrary code, data leakage, or full system compromise
Affected Products
Share secrets securely
Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.
Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.
- • Encrypted identity
- • Private Spaces for organizations and teams
- • End-to-end encrypted chat, calls, files, and notes
- • Sensitive AI work and protected collaboration
- • Built for information that cannot leak
Our mission is to secure human work alongside AI.
Product | Affected Versions
Substance3D – Stager | 3.1.3 and earlier
How the Exploit Works
The exploit works by an attacker crafting a malicious file that causes an out-of-bounds read when parsed by Substance3D – Stager. This read past the end of an allocated memory structure allows the attacker to execute arbitrary code in the context of the current user.
Conceptual Example Code
Below is a conceptual example of a malicious file that could trigger the vulnerability. This is not actual code, but rather a representation of what a malicious payload might look like:
# Crafted file with malicious payload
file_header = 'Substance3D File'
payload = 'A' * 1024 * 1024 # Oversized payload resulting in out-of-bounds read
file_content = file_header + payload
# Save to file
with open('malicious.s3d', 'w') as f:
f.write(file_content)This crafted file, when opened by a victim using an affected version of Substance3D – Stager, would trigger the out-of-bounds read vulnerability and potentially allow the attacker to execute arbitrary code.
Mitigation Guidance
Users are advised to apply the vendor-supplied patch as soon as possible. As a temporary mitigation, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to detect and block attempts to exploit this vulnerability.