CVE-2026-25933
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
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| arduino | app_lab | to 0.4.0 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
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.
What immediate steps should I take to mitigate this vulnerability?
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.