{"id":"CVE-2026-16444","state":"PUBLISHED","title":"Improper Validation of File Paths in TeamViewer Desktop Clients","description":"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.","publishedAt":"2026-08-26T09:10:16.193Z","updatedAt":"2026-08-27T03:58:23.229Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"TV"},"assigner":"TV","products":["TeamViewer Full Client, Host, QuickSupport & Portable","TeamViewer Full Client, Host, QuickSupport & Portable (for Windows 7 & 8)","TeamViewer Full Client, Host, QuickSupport (v14 for Windows)","TeamViewer Full Client, Host, QuickSupport (v14 for Linux)","TeamViewer Full Client, Host, QuickSupport (v14 for macOS)","TeamViewer Full Client, Host, QuickSupport & Portable (v13 for Windows)","TeamViewer Full Client, Host, QuickSupport (v13 for Linux)","TeamViewer Full Client, Host, QuickSupport (v13 for macOS)"],"affected":[{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport & Portable","defaultStatus":"unaffected","versions":[{"version":"15.0","status":"affected","lessThan":"15.81.5","versionType":"custom"}],"platforms":["Windows","MacOS","Linux"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport & Portable (for Windows 7 & 8)","defaultStatus":"unaffected","versions":[{"version":"15.64.0","status":"affected","lessThan":"15.64.7","versionType":"custom"}],"platforms":["Windows"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v14 for Windows)","defaultStatus":"unaffected","versions":[{"version":"14.0","status":"affected","lessThan":"14.7.48833","versionType":"custom"}],"platforms":["Windows"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v14 for Linux)","defaultStatus":"unaffected","versions":[{"version":"14.0","status":"affected","lessThan":"14.7.48838","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v14 for macOS)","defaultStatus":"unaffected","versions":[{"version":"14.0","status":"affected","lessThan":"14.7.48838","versionType":"custom"}],"platforms":["MacOS"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport & Portable (v13 for Windows)","defaultStatus":"unaffected","versions":[{"version":"13.0","status":"affected","lessThan":"13.2.36229","versionType":"custom"}],"platforms":["Windows"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v13 for Linux)","defaultStatus":"unaffected","versions":[{"version":"13.0","status":"affected","lessThan":"13.2.153978","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v13 for macOS)","defaultStatus":"unaffected","versions":[{"version":"13.0","status":"affected","lessThan":"13.2.153981","versionType":"custom"}],"platforms":["MacOS"]}],"references":["https://www.teamviewer.com/de/resources/trust-center/security-bulletins/tv-2026-1008/"],"weaknesses":["CWE-73"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16444.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16444","state":"PUBLISHED","datePublished":"2026-08-26T09:10:16.193Z","dateUpdated":"2026-08-27T03:58:23.229Z","assignerShortName":"TV","assignerOrgId":"13430f76-86eb-43b2-a71c-82c956ef31b6","dateReserved":"2026-07-21T07:42:28.976Z"},"containers":{"cna":{"title":"Improper Validation of File Paths in TeamViewer Desktop Clients","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."}],"affected":[{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport & Portable","defaultStatus":"unaffected","versions":[{"version":"15.0","status":"affected","lessThan":"15.81.5","versionType":"custom"}],"platforms":["Windows","MacOS","Linux"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport & Portable (for Windows 7 & 8)","defaultStatus":"unaffected","versions":[{"version":"15.64.0","status":"affected","lessThan":"15.64.7","versionType":"custom"}],"platforms":["Windows"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v14 for Windows)","defaultStatus":"unaffected","versions":[{"version":"14.0","status":"affected","lessThan":"14.7.48833","versionType":"custom"}],"platforms":["Windows"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v14 for Linux)","defaultStatus":"unaffected","versions":[{"version":"14.0","status":"affected","lessThan":"14.7.48838","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v14 for macOS)","defaultStatus":"unaffected","versions":[{"version":"14.0","status":"affected","lessThan":"14.7.48838","versionType":"custom"}],"platforms":["MacOS"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport & Portable (v13 for Windows)","defaultStatus":"unaffected","versions":[{"version":"13.0","status":"affected","lessThan":"13.2.36229","versionType":"custom"}],"platforms":["Windows"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v13 for Linux)","defaultStatus":"unaffected","versions":[{"version":"13.0","status":"affected","lessThan":"13.2.153978","versionType":"custom"}],"platforms":["Linux"]},{"vendor":"TeamViewer","product":"Full Client, Host, QuickSupport (v13 for macOS)","defaultStatus":"unaffected","versions":[{"version":"13.0","status":"affected","lessThan":"13.2.153981","versionType":"custom"}],"platforms":["MacOS"]}],"references":[{"url":"https://www.teamviewer.com/de/resources/trust-center/security-bulletins/tv-2026-1008/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.5,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-73","lang":"en","description":"CWE-73 External control of file name or path","type":"CWE"}]}],"providerMetadata":{"shortName":"TV","orgId":"13430f76-86eb-43b2-a71c-82c956ef31b6","dateUpdated":"2026-08-26T09:10:16.193Z"},"impacts":[{"capecId":"CAPEC-126","descriptions":[{"lang":"en","value":"CAPEC-126 Path Traversal"}]}],"solutions":[{"lang":"en","value":"Update to the last available client version.","supportingMedia":[{"type":"text/html","base64":false,"value":"Update to the last available client version."}]}],"credits":[{"lang":"en","value":"Jamir0quai & sam91281","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-26T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-16444"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-27T03:58:23.229Z"}}]}}}