{"id":"CVE-2026-16444","aliases":["EUVD-2026-66379","GHSA-3mf4-g44r-xcvg"],"status":"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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00412,"percentile":0.35883,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-73"],"published":"2026-08-26T09:10:16Z","modified":"2026-09-01T20:50:58Z","exploits":[{"source":"pocgithub","id":"jamir0quai/CVE-2026-16444","title":"jamir0quai/CVE-2026-16444","date":"2026-10-05","url":"https://github.com/jamir0quai/CVE-2026-16444"}],"products":[{"vendor":"teamviewer","product":"full client, host, quicksupport \u0026 portable"},{"vendor":"teamviewer","product":"full client, host, quicksupport \u0026 portable (for windows 7 \u0026 8)"},{"vendor":"teamviewer","product":"full client, host, quicksupport \u0026 portable (v13 for windows)"},{"vendor":"teamviewer","product":"full client, host, quicksupport (v13 for linux)"},{"vendor":"teamviewer","product":"full client, host, quicksupport (v13 for macos)"},{"vendor":"teamviewer","product":"full client, host, quicksupport (v14 for linux)"},{"vendor":"teamviewer","product":"full client, host, quicksupport (v14 for macos)"},{"vendor":"teamviewer","product":"full client, host, quicksupport (v14 for windows)"}],"references":[{"url":"https://www.teamviewer.com/de/resources/trust-center/security-bulletins/tv-2026-1008/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16444"},{"url":"https://www.teamviewer.com/de/resources/trust-center/security-bulletins/tv-2026-1008"},{"url":"https://github.com/advisories/GHSA-3mf4-g44r-xcvg"}],"sources":{"cve":[{"id":"CVE-2026-16444","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.","status":"published","published":"2026-08-26T09:10:16.193Z","modified":"2026-08-27T03:58:23.229Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:20:11.24076Z"}],"euvd":[{"id":"EUVD-2026-66379","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.","status":"published","published":"2026-08-26T09:10:16Z","modified":"2026-08-27T03:58:23Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:01:28.934147Z"}],"ghsa":[{"id":"GHSA-3mf4-g44r-xcvg","title":"Improper\nneutralization of path traversal sequences in TeamViewer Desktop Clients prior\nVersion...","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.","status":"published","published":"2026-08-27T06:31:29Z","modified":"2026-08-27T06:31:29Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T15:11:02.000078Z"}],"nvd":[{"id":"CVE-2026-16444","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.","status":"published","published":"2026-08-26T10:16:39.94Z","modified":"2026-09-01T20:50:58.753Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:12:41.66469Z"}]}}