CVE-2026-111854: Tektronix 3 Series MDO · Path Traversal
Affects Tektronix 3 Series MDOSource CVE Database V5
Not known to be exploited · CVSS 8.1 High : upgrade to 1.21.1 soon.
Data as of 26 Oct 2026, 17:30 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.21.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 17 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Tektronix 3 Series MDO to 1.21.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Tektronix3 Series MDO | Affected
| Fixed in
|
AI-suggested
A fix is available in Tektronix 3 Series MDO firmware version 1.21.1 and later. Users should upgrade to version 1.21.1 or above to remediate this vulnerability.
Description
Tektronix 3 Series MDO devices before version 1.21.1 contain a path traversal vulnerability in the SCPI FILESystem command interface. This flaw allows remote attackers with limited privileges to read or modify arbitrary files on the device due to insufficient validation of file paths. The vulnerability has a high severity with a CVSS score of 8.1, impacting confidentiality and integrity but not availability.