CVE-2026-111854
Received Received - Intake

Path Traversal in Tektronix 3 Series MDO Devices

Publication date: 2026-10-17

Last updated on: 2026-10-17

Assigner: MITRE

Description
An issue was discovered on Tektronix 3 Series MDO devices before 1.21.1. A path traversal vulnerability in the SCPI FILESystem command interface allows remote attackers to read or modify arbitrary files on the device through insufficient validation of file paths supplied to filesystem access commands.

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Meta Information

Published
2026-10-17
Last Modified
2026-10-17
Generated
2026-10-17
AI Q&A
2026-10-17
EPSS Evaluated
N/A
NVD
CVE-2026-111854
EUVD
EUVD-2026-103207

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Tektronix 3 Series MDO 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

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Executive Summary

This vulnerability is a path traversal issue in Tektronix 3 Series MDO devices running firmware before version 1.21.1. It allows remote attackers to read or modify arbitrary files on the device by exploiting insufficient validation of file paths in the SCPI FILESystem command interface.

Detection Guidance

To detect this vulnerability, check the firmware version of Tektronix 3 Series MDO devices. If the version is below 1.21.1, the device is vulnerable. Use the device's web interface or SCPI commands to verify the firmware version.

Impact Analysis

An attacker could exploit this to access sensitive data stored on the device, alter system configurations, or install malicious files. This could lead to data breaches, device malfunction, or unauthorized control of the device.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR or HIPAA if sensitive data is exposed or altered. Organizations may face legal penalties, loss of trust, and reputational damage due to unauthorized access to protected information.

Mitigation Strategies

Update the Tektronix 3 Series MDO device firmware to version 1.21.1 or later. Restrict network access to the device's SCPI interface to trusted sources only. Monitor for unauthorized file access attempts or modifications.

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