FKIE_CVE-2026-23567

Vulnerability from fkie_nvd - Published: 2026-01-29 09:16 - Updated: 2026-02-11 20:08
Severity ?
6.5 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.
References
psirt@teamviewer.comhttps://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/Vendor Advisory
Impacted products
Vendor Product Version
teamviewer digital_employee_experience *
microsoft windows -
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8E2A5CE4-D147-45E1-8D16-3257B6E79E70",
              "versionEndExcluding": "26.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
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              "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets."
    }
  ],
  "id": "CVE-2026-23567",
  "lastModified": "2026-02-11T20:08:43.147",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "psirt@teamviewer.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-29T09:16:04.340",
  "references": [
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      "source": "psirt@teamviewer.com",
      "tags": [
        "Vendor Advisory"
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      "url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/"
    }
  ],
  "sourceIdentifier": "psirt@teamviewer.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        }
      ],
      "source": "psirt@teamviewer.com",
      "type": "Secondary"
    }
  ]
}


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