High severity7.5NVD Advisory· Published Oct 17, 2026
CVE-2026-111855
CVE-2026-111855
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.
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Affected products
1- Range: <1.21.1
Patches
Vulnerability mechanics
References
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