CVE-2026-19743: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in TeamViewer Full Client
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.
AI Analysis
Technical Summary
This vulnerability (CWE-22) involves improper validation of file paths in the local IPC service daemon of TeamViewer Full Client and Host on multiple operating systems. An attacker with local authenticated access and low privileges can exploit this flaw by crafting IPC commands that manipulate file paths, enabling arbitrary file writes with elevated privileges. The affected versions are TeamViewer Full Client versions from 15.0 up to but not including 15.82. The CVSS v3.1 base score is 7.8, indicating a high severity vulnerability with local attack vector, low complexity, and no user interaction required.
Potential Impact
Successful exploitation allows a local attacker with low privileges to escalate their privileges to system-level (NT AUTHORITY/SYSTEM on Windows or root on Linux/macOS). This can lead to full control over the affected system, compromising confidentiality, integrity, and availability.
Mitigation Recommendations
A fixed version is available starting from TeamViewer Full Client 15.82. Users should upgrade to version 15.82 or later to remediate this vulnerability. No other mitigations or temporary workarounds are indicated.
CVE-2026-19743: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in TeamViewer Full Client
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.
CVSS v3.1
Score 7.8high
Affected software
TeamViewer
Full Client
TeamViewer
Host
pkg:github/teamviewer/full-clientRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-22) involves improper validation of file paths in the local IPC service daemon of TeamViewer Full Client and Host on multiple operating systems. An attacker with local authenticated access and low privileges can exploit this flaw by crafting IPC commands that manipulate file paths, enabling arbitrary file writes with elevated privileges. The affected versions are TeamViewer Full Client versions from 15.0 up to but not including 15.82. The CVSS v3.1 base score is 7.8, indicating a high severity vulnerability with local attack vector, low complexity, and no user interaction required.
Potential Impact
Successful exploitation allows a local attacker with low privileges to escalate their privileges to system-level (NT AUTHORITY/SYSTEM on Windows or root on Linux/macOS). This can lead to full control over the affected system, compromising confidentiality, integrity, and availability.
Mitigation Recommendations
A fixed version is available starting from TeamViewer Full Client 15.82. Users should upgrade to version 15.82 or later to remediate this vulnerability. No other mitigations or temporary workarounds are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TV
- Date Reserved
- 2026-08-13T13:55:15.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abbf0c0c9b3d5d17704c504
Added to database: 09/29/2026, 17:09:20 UTC
Last enriched: 09/29/2026, 17:13:56 UTC
Last updated: 09/29/2026, 18:20:12 UTC
Views: 5
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