---
id: CVE-2026-19743
title: >-
  Improper path validation in the local IPC service of TeamViewer Full Client
  and Host on Windows, Linux, and macOS prior to version 15.82 allows a local
  authenticated user with low privileges to perform arbitrary file writes with
  elevated…
summary: >-
  Improper path validation in the local IPC service of TeamViewer Full Client
  and Host on Windows, Linux, and macOS prior to version 15.82 allows a local
  authenticated user with low privileges to perform arbitrary file writes with
  elevated…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-22
vendor: TeamViewer
product: Full Client
affected:
  - full_client >= 15.0 < 15.82
  - >-
    full_client >= 15.64.0 (Legacy Windows 7 & 8) < 15.64.8 (Legacy Windows 7 &
    8)
  - full_client >= 14.7.0 (Windows) < 14.7.48855 (Windows)
  - full_client >= 13.2.0 (Windows) < 13.2.36230 (Windows)
  - full_client >= 14.7.0 (Linux) < 14.7.48855 (Linux)
  - full_client >= 13.2.0 (Linux) < 13.2.153995 (Linux)
  - full_client >= 14.7.0 (MacOS) < 14.7.48855 (MacOS)
  - full_client >= 13.2.0 (MacOS) < 13.2.153994 (MacOS)
  - Host >= 15.0 < 15.82
  - Host >= 15.64.0 (Legacy Windows 7 & 8) < 15.64.8 (Legacy Windows 7 & 8)
  - Host >= 14.7.0 (Windows) < 14.7.48855 (Windows)
  - Host >= 13.2.0 (Windows) < 13.2.36230 (Windows)
  - Host >= 14.7.0 (Linux) < 14.7.48855 (Linux)
  - Host >= 13.2.0 (Linux) < 13.2.153995 (Linux)
  - Host >= 14.7.0 (MacOS) < 14.7.48855 (MacOS)
  - Host >= 13.2.0 (MacOS) < 13.2.153994 (MacOS)
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T16:17:07.177'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19743'
references:
  - url: >-
      https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1010/
    label: psirt@teamviewer.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T16:39:33.264Z'
---

## Overview

Improper path validation in the local IPC service of TeamViewer Full Client and Host on Windows, Linux, and macOS prior to version 15.82 allows a local authenticated user with low privileges to perform arbitrary file writes with elevated privileges (NT AUTHORITY/SYSTEM \ root). By sending crafted IPC commands to the local service daemon, an attacker could manipulate file paths, leading to local privilege escalation.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.