FKIE_CVE-2026-16444

Vulnerability from fkie_nvd - Published: 2026-08-26 10:16 - Updated: 2026-08-26 14:17
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
Improper neutralization of path traversal sequences in TeamViewer Desktop Clients prior Version 15.81.5 allows an authenticated remote session participant to write files to unintended locations on the local file system via file transfer or virtual file clipboard mechanisms. An attacker can leverage this behavior to achieve arbitrary file write and potentially execute code with the privileges of the affected user.
References
psirt@teamviewer.comhttps://www.teamviewer.com/de/resources/trust-center/security-bulletins/tv-2026-1008/
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows",
            "MacOS",
            "Linux"
          ],
          "product": "Full Client, Host, QuickSupport \u0026 Portable",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "15.81.5",
              "status": "affected",
              "version": "15.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Full Client, Host, QuickSupport \u0026 Portable (for Windows 7 \u0026 8)",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "15.64.7",
              "status": "affected",
              "version": "15.64.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Full Client, Host, QuickSupport (v14 for Windows)",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "14.7.48833",
              "status": "affected",
              "version": "14.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Linux"
          ],
          "product": "Full Client, Host, QuickSupport (v14 for Linux)",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "14.7.48838",
              "status": "affected",
              "version": "14.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "MacOS"
          ],
          "product": "Full Client, Host, QuickSupport (v14 for macOS)",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "14.7.48838",
              "status": "affected",
              "version": "14.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "product": "Full Client, Host, QuickSupport \u0026 Portable (v13 for Windows)",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "13.2.36229",
              "status": "affected",
              "version": "13.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "Linux"
          ],
          "product": "Full Client, Host, QuickSupport (v13 for Linux)",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "13.2.153978",
              "status": "affected",
              "version": "13.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "MacOS"
          ],
          "product": "Full Client, Host, QuickSupport (v13 for macOS)",
          "vendor": "TeamViewer",
          "versions": [
            {
              "lessThan": "13.2.153981",
              "status": "affected",
              "version": "13.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "psirt@teamviewer.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper\nneutralization of path traversal sequences in TeamViewer Desktop Clients prior\nVersion 15.81.5 allows an authenticated remote session participant to write files\nto unintended locations on the local file system via file transfer or virtual\nfile clipboard mechanisms. An attacker can leverage this behavior to achieve\narbitrary file write and potentially execute code with the privileges of the\naffected user."
    }
  ],
  "id": "CVE-2026-16444",
  "lastModified": "2026-08-26T14:17:07.860",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "psirt@teamviewer.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-16444",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-26T13:35:27.900203Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-26T10:16:39.940",
  "references": [
    {
      "source": "psirt@teamviewer.com",
      "url": "https://www.teamviewer.com/de/resources/trust-center/security-bulletins/tv-2026-1008/"
    }
  ],
  "sourceIdentifier": "psirt@teamviewer.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-73"
        }
      ],
      "source": "psirt@teamviewer.com",
      "type": "Secondary"
    }
  ]
}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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