CVE-2026-16444: CWE-73 External control of file name or path in TeamViewer Full Client, Host, QuickSupport & Portable
Description
CVE-2026-16444 is a high-severity vulnerability in TeamViewer Desktop Clients prior to version 15.81.5. It involves improper neutralization of path traversal sequences, allowing an authenticated remote session participant to write files to unintended locations on the local file system via file transfer or virtual file clipboard mechanisms. This can lead to arbitrary file write and potentially code execution with the privileges of the affected user.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-73) affects TeamViewer Full Client, Host, QuickSupport, and Portable versions before 15.81.5. It arises from improper handling of path traversal sequences during file transfer or virtual clipboard operations in remote sessions. An attacker with authenticated remote session access can exploit this flaw to write files outside intended directories, potentially achieving arbitrary file write and executing code with the user's privileges.
Potential Impact
Successful exploitation allows an authenticated remote session participant to write files to arbitrary locations on the local file system, which can lead to arbitrary code execution with the privileges of the affected user. This can compromise the confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. The vulnerability affects versions prior to 15.81.5, so upgrading to version 15.81.5 or later is recommended once the vendor confirms the fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3mf4-g44r-xcvg
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-16444"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9053feacd9273b49696e20
Added to database: 08/27/2026, 15:13:02 UTC
Last enriched: 09/08/2026, 15:22:34 UTC
Last updated: 10/09/2026, 18:48:18 UTC
Views: 44
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