CVE-2026-111855
HIGH
NVD
CVSS Score
7.5
Severity
HIGH
Published
Oct 17, 2026
Vendor
unknown
Description
An issue was discovered on Tektronix 3 Series MDO devices before 1.21.1. A path traversal vulnerability exists in the web management interface of the device. Insufficient validation of user-supplied file paths allows remote attackers to read arbitrary files accessible to the application. Depending on configuration, exploitation may be possible without authentication.