Overview
The cybersecurity world is facing yet another critical issue, this time traced to a heap-buffer-overflow vulnerability in the ExecuTorch methods. This vulnerability, identified as CVE-2025-30402, affects versions of ExecuTorch prior to commit 93b1a0c15f7eda49b2bc46b5b4c49557b4e9810f. The vulnerability has potential ramifications that could lead to system compromise or data leakage. In this blog post, we will delve into the specifics of this vulnerability, its potential impacts, and the remediation steps needed to mitigate its effects.
As this vulnerability has a CVSS Severity Score of 8.1, it is imperative for organizations and individuals using the affected versions of ExecuTorch to take immediate action. The severity of this vulnerability underscores its potential to disrupt systems and leak sensitive information, highlighting the urgent need for a robust response.
Vulnerability Summary
CVE ID: CVE-2025-30402
Severity: High (8.1)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
ExecuTorch | Before commit 93b1a0c15f7eda49b2bc46b5b4c49557b4e9810f
How the Exploit Works
The vulnerability stems from a heap-buffer-overflow issue in the loading of ExecuTorch methods. This flaw allows an attacker to cause a runtime crash, which could potentially result in code execution or data leakage. The overflow occurs when an attacker sends more data into the buffer than it can handle, causing the excess data to overflow into adjacent memory space. This overflow can overwrite other data or cause the system to crash, leading to potential system compromise.
Conceptual Example Code
Here is a conceptual example that demonstrates how an attacker might exploit the vulnerability:
POST /ExecuTorch/LoadMethods HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"methods": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
}In this example, the “A” character is used to represent any data that exceeds the buffer’s capacity, causing an overflow.
Mitigation Guidance
The most effective mitigation strategy for this vulnerability is to apply the vendor patch. The patch should resolve the heap-buffer-overflow vulnerability in the loading of ExecuTorch methods, preventing potential exploits. If the patch cannot be applied immediately, a temporary mitigation strategy could be to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block potential exploit attempts. However, these are only temporary measures and the vendor patch should be applied as soon as possible to fully resolve the vulnerability.