Is CVE-2026-111854 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-111854 being exploited in the wild.

How severe is CVE-2026-111854?

High severity, with a CVSS score of 8.1, published 17 October 2026.

Which products and versions are affected?

Tektronix 3 Series MDO before 1.21.1.

Is there a fix for CVE-2026-111854?

Yes: fixed in 1.21.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-111854 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-111854?

Check whether you run Tektronix 3 Series MDO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-111854: Tektronix 3 Series MDO path traversal in SCPI FILESystem

CVE-2026-111854 · Severity: high · CVSS 8.1 · Published 2026-10-17

Tektronix 3 Series MDO devices are mixed-domain oscilloscopes used in test and measurement environments. A path traversal vulnerability in the SCPI FILESystem command interface allows remote attackers to read or modify arbitrary files on the device, potentially compromising test data, calibration files, or device configuration.

Technologies: Tektronix 3 Series MDO. Vendors: Tektronix.

Quick answers

Is CVE-2026-111854 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-111854 being exploited in the wild.
How severe is CVE-2026-111854?: High severity, with a CVSS score of 8.1, published 17 October 2026.
Which products and versions are affected?: Tektronix 3 Series MDO before 1.21.1.
Is there a fix for CVE-2026-111854?: Yes: fixed in 1.21.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-111854 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-111854?: Check whether you run Tektronix 3 Series MDO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 1.21.1

Technical details

The SCPI FILESystem command interface fails to properly validate file paths supplied by remote clients, allowing path traversal attacks. An attacker with network access to the device's SCPI interface can exploit this to read sensitive files or write malicious content to arbitrary locations on the device filesystem, bypassing intended access controls.

Affected products

Tektronix 3 Series MDO before 1.21.1

Timeline

2026-10-17: disclosed

References

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