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CVE-2026-23564

Estado: AnalizadaMedia (6.5)—

A vulnerability in TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an attacker on the adjacent network to cause normally encrypted UDP traffic to be sent in cleartext. This can result in disclosure of sensitive information.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Teamviewer — Digital Employee Experience

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-23564",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-23564",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-29T15:57:06.915459Z"
        }
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    ],
    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
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          "vectorString": "CVSS:3.1/AV:A/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": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@teamviewer.com",
      "affectedData": [
        {
          "vendor": "TeamViewer",
          "modules": [
            "Content Distribution Service",
            "NomadBranch.exe"
          ],
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              "version": "0",
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              "versionType": "custom"
            }
          ],
          "platforms": [
            "Windows"
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  ],
  "published": "2026-01-29T09:16:03.950",
  "references": [
    {
      "url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@teamviewer.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "type": "Secondary",
      "source": "psirt@teamviewer.com",
      "description": [
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          "value": "CWE-319"
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      "lang": "en",
      "value": "A vulnerability in TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an attacker on the adjacent network to cause normally encrypted UDP traffic to be sent in cleartext. This can result in disclosure of sensitive information."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en TeamViewer DEX Client (anteriormente 1E Client) - Servicio de Distribución de Contenido (NomadBranch.exe) anterior a la versión 26.1 para Windows permite a un atacante en la red adyacente provocar que el tráfico UDP normalmente cifrado se envíe en texto claro. Esto puede resultar en la divulgación de información sensible."
    }
  ],
  "lastModified": "2026-06-17T10:21:47.010",
  "configurations": [
    {
      "nodes": [
        {
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          "cpeMatch": [
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}