What is CVE-2026-111853?

CVE-2026-111853 is a high-severity vulnerability in Tektronix 3 Series Mdo, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-10-17.

How severe is CVE-2026-111853?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Tektronix 3 Series Mdo

CVE-2026-111853

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.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-10-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Tektronix 3 Series Mdo

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

Frequently asked questions

What is CVE-2026-111853?: CVE-2026-111853 is a high-severity vulnerability in Tektronix 3 Series Mdo, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-10-17.
How severe is CVE-2026-111853?: High severity. CVSS v3 base score is 8.8 out of 10.