CVE-2026-25933
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Command Injection via Unsanitized Terminal Input in Arduino App Lab

Publication date: 2026-02-12

Last updated on: 2026-02-19

Assigner: GitHub, Inc.

Description
Arduino App Lab is a cross-platform IDE for developing Arduino Apps. Prior to 0.4.0, a vulnerability was identified in the Terminal component of the arduino-app-lab application. The issue stems from insufficient sanitization and validation of input data received from connected hardware devices, specifically in the _info.Serial and _info.Address metadata fields. The problem occurs during device information handling. When a board is connected, the application collects identifying attributes to establish a terminal session. Because strict validation is not enforced for the Serial and Address parameters, an attacker with control over the connected hardware can supply specially crafted strings containing shell metacharacters. The exploitation requires direct physical access to a previously tampered board. When the host system processes these fields, any injected payload is executed with the privileges of the user running arduino-app-lab. This vulnerability is fixed in 0.4.0.
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Meta Information
Published
2026-02-12
Last Modified
2026-02-19
Generated
2026-06-16
AI Q&A
2026-02-12
EPSS Evaluated
2026-06-14
NVD
CVE-2026-25933
EUVD
EUVD-2026-6691
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
arduino app_lab to 0.4.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
KEV Icon
CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
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Executive Summary

CVE-2026-25933 is a vulnerability in the Terminal component of the Arduino App Lab application, affecting versions prior to 0.4.0. The issue arises because the application does not properly sanitize or validate input data received from connected hardware devices, specifically in the _info.Serial and _info.Address metadata fields.

When a board is connected, the application collects identifying attributes to establish a terminal session. Due to insufficient validation, an attacker who has physical access to a tampered hardware board can supply specially crafted strings containing shell metacharacters. This leads to OS command injection, allowing arbitrary commands to be executed with the privileges of the user running Arduino App Lab.

Exploitation requires direct physical access to the compromised hardware, high privileges, and user interaction. The vulnerability is classified under CWE-78 (Improper Neutralization of Special Elements used in an OS Command) and was fixed in version 0.4.0 by adding proper input validation and sanitization.

Impact Analysis

This vulnerability can have significant impacts on confidentiality, integrity, and availability of the affected system.

  • An attacker with physical access to a tampered board can execute arbitrary OS commands with the privileges of the user running Arduino App Lab.
  • This can lead to unauthorized access to sensitive data, modification or deletion of files, and disruption of system operations.
  • Because the attack requires physical access and high privileges, the attack complexity is high, but the consequences are severe.
Compliance Impact

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Detection Guidance

Detection of this vulnerability involves identifying if the Arduino App Lab version in use is prior to 0.4.0, as these versions contain the vulnerable Terminal component.

Since the vulnerability arises from improper sanitization of the _info.Serial and _info.Address metadata fields when a board is connected, monitoring or logging these fields for suspicious or unusual shell metacharacters in device metadata could help detect exploitation attempts.

No specific detection commands or network/system scanning commands are provided in the available resources.

Mitigation Strategies

The primary mitigation step is to upgrade the Arduino App Lab application to version 0.4.0 or later, where the vulnerability has been fixed by implementing proper input validation and sanitization of the _info.Serial and _info.Address fields.

Additionally, restrict physical access to hardware boards to prevent attackers from connecting tampered devices that could exploit this vulnerability.

Ensure that users running the Arduino App Lab do so with the least privileges necessary to reduce the impact of potential exploitation.

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