CVE-2025-30405: ExecuTorch Integer Overflow Vulnerability Could Lead to System Compromise

Overview

We are examining a critical vulnerability identified as CVE-2025-30405, which affects the loading of ExecuTorch models. This vulnerability is due to an integer overflow that can lead to objects being placed outside their allocated memory area. Consequently, this can potentially result in unauthorized code execution or other undesirable effects. This issue is particularly alarming because it poses a severe risk to any system utilizing ExecuTorch prior to the specified commit. It is of utmost importance due to its potential for system compromise and data leakage.

Vulnerability Summary

CVE ID: CVE-2025-30405
Severity: Critical (CVSS 9.8)
Attack Vector: Local/Remote
Privileges Required: None
User Interaction: Required
Impact: System compromise, Potential data leakage

Affected Products

Product | Affected Versions

ExecuTorch | Prior to commit 0830af8207240df8d7f35b984cdf8bc35d74fa73

How the Exploit Works

An attacker exploiting this vulnerability would take advantage of the integer overflow in the loading of ExecuTorch models. The overflow occurs when the size of an object exceeds its allocated memory space, allowing the attacker to place malicious objects outside this area. This misplaced object can then be used to execute code or cause other undesired effects. The vulnerability can be exploited locally or remotely, and while user interaction is required, no special privileges are needed, increasing its potential impact.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited. This pseudocode outlines how an attacker might overflow the integer during the loading of an ExecuTorch model:

# Attacker creates an oversized model
model = execuTorch.Model()
model.size = 2**31 # Size exceeding the max integer
# Attacker loads the oversized model
model.load()
# Overflow occurs, allowing attacker to place malicious objects outside allocated memory area
malicious_object = Malicious()
model.place(malicious_object)
# Malicious object can potentially execute unauthorized code or cause other undesirable effects
malicious_object.execute()

Please note that this is a theoretical example and the actual exploit might be more complex and require in-depth knowledge of the target system and the ExecuTorch software.