CVE-2026-111855An issue was discovered on Tektronix 3 Series MDO devices before 1.21.1.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Received
- Record last updated
- Oct 17, 2026
- First seen by InfoSec Signals
- Oct 17, 2026
Affected products
Tektronix 3 Series MDO tektronix:3_series_mdo (from the name) | before 1.21.1 | CNA record |
References
- https://www.tek.com/en/products/oscilloscopes/3-series-mdo
- https://download.tek.com/document/TEK-PSA-002-092026.pdf
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.