CVE-2026-16444 PUBLISHED

Improper Validation of File Paths in TeamViewer Desktop Clients

Assigner: TV
Reserved: 21.07.2026 Published: 26.08.2026 Updated: 26.08.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 7.5

Product Status

Vendor TeamViewer
Product Full Client, Host, QuickSupport & Portable
Versions Default: unaffected
  • affected from 15.0 to 15.81.5 (excl.)
Vendor TeamViewer
Product Full Client, Host, QuickSupport & Portable (for Windows 7 & 8)
Versions Default: unaffected
  • affected from 15.64.0 to 15.64.7 (excl.)
Vendor TeamViewer
Product Full Client, Host, QuickSupport (v14 for Windows)
Versions Default: unaffected
  • affected from 14.0 to 14.7.48833 (excl.)
Vendor TeamViewer
Product Full Client, Host, QuickSupport (v14 for Linux)
Versions Default: unaffected
  • affected from 14.0 to 14.7.48838 (excl.)
Vendor TeamViewer
Product Full Client, Host, QuickSupport (v14 for macOS)
Versions Default: unaffected
  • affected from 14.0 to 14.7.48838 (excl.)
Vendor TeamViewer
Product Full Client, Host, QuickSupport & Portable (v13 for Windows)
Versions Default: unaffected
  • affected from 13.0 to 13.2.36229 (excl.)
Vendor TeamViewer
Product Full Client, Host, QuickSupport (v13 for Linux)
Versions Default: unaffected
  • affected from 13.0 to 13.2.153978 (excl.)
Vendor TeamViewer
Product Full Client, Host, QuickSupport (v13 for macOS)
Versions Default: unaffected
  • affected from 13.0 to 13.2.153981 (excl.)

Solutions

Update to the last available client version.

Credits

  • Jamir0quai & sam91281 finder

References

Problem Types

  • CWE-73 External control of file name or path CWE

Impacts

  • CAPEC-126 Path Traversal