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CVE-2026-111855

Status: Awaiting AnalysisHigh (7.5)—
Severity7.5High · CVSS 3.1
Exploitation probability0.49 %higher than 41% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

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

Base score
7.5
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.49 %
Percentile among all scored CVEs
41
Score date
10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Path traversal en la interfaz web (AV:N, PR:N) permite leer archivos arbitrarios del dispositivo; el texto indica lectura de archivos, sin mencionar credenciales explícitas.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Privileged Account ManagementLimit Access to Resource Over NetworkFilter Network TrafficUpdate SoftwareActive Directory ConfigurationVulnerability Scanning

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Tektronix — 3 Series MDO DevicesAI

CWEs

References

Show 2 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-111855",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@mitre.org",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "Tektronix",
          "product": "3 Series MDO",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.21.1",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-17T02:17:18.877",
  "references": [
    {
      "url": "https://download.tek.com/document/TEK-PSA-002-092026.pdf",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.tek.com/en/products/oscilloscopes/3-series-mdo",
      "source": "cve@mitre.org"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "cve@mitre.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "lastModified": "2026-10-19T21:13:39.973",
  "sourceIdentifier": "cve@mitre.org"
}