CVE-2026-111854
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product3 Series MDO
PublishedOct 17, 2026
First seenOct 17, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- Tektronix 3 Series MDO1.21.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Tektronix 3 Series MDO | v < 1.21.1 | 1.21.1 |
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