Tektronix 3 MDO up to 1.21.0 SCPI FILESystem Command Interface path traversal

Summaryinfo

A vulnerability marked as critical has been reported in Tektronix 3 MDO up to 1.21.0. The affected element is an unknown function of the component SCPI FILESystem Command Interface. This manipulation causes path traversal. This vulnerability is tracked as CVE-2026-111854. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Tektronix 3 MDO up to 1.21.0 and classified as critical. Affected by this vulnerability is an unknown code of the component SCPI FILESystem Command Interface. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at tek.com. This vulnerability is known as CVE-2026-111854 since 10/17/2026. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 1.21.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-103207). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Tektronix

Name

• 3 MDO

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21.0

CPE 2.3info

• 🔒
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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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