Is CVE-2026-111853 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-111853?

CVE-2026-111853 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-111853

Description

An issue was discovered on Tektronix 3 Series MDO devices before 1.21.1. An OS command injection vulnerability exists in the FILESystem:MOUNT:DRIve SCPI command handler. Insufficient neutralization of user-supplied input allows remote attackers to execute arbitrary operating system commands with elevated privileges.