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CVE-2026-19743— Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in TeamViewer Desktop Clients

Quick assessment

Affected
TeamViewer Full Client
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 AUTHORI

CVSS 7.8 · High
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I. Basic Information for CVE-2026-19743

Vulnerability Information

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Vulnerability Title
Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in TeamViewer Desktop Clients
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TeamViewer Full Client 15.0 ~ 15.82 -
TeamViewer Host 15.0 ~ 15.82 -

II. Public POCs for CVE-2026-19743

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III. Intelligence Information for CVE-2026-19743

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Other References for CVE-2026-19743 (1)

Same Patch Batch · TeamViewer · 2026-09-29 · 5 CVEs total

CVE-2026-92370 8.8 HIGH Remote Session Access Control Bypass Leading to Remote Code Execution
CVE-2026-92368 7.8 HIGH Heap-Based Buffer Overflow in TeamViewer Session Recording Playback Leads to Remote Code E
CVE-2026-92369 7.3 HIGH Time-of-check Time-of-use (TOCTOU) Race Condition in TeamViewer Windows Installer Rollback
CVE-2026-92371 7.0 HIGH Local Privilege Escalation via Improper Link Resolution in Cloud Session Recording

IV. Related Vulnerabilities

Same product: Full Client
Same vendor: TeamViewer
Same weakness: CWE-22

V. Comments for CVE-2026-19743

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