CVE-2026-16444
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk17th percentile - higher than 17% of all known CVEs
Summary
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.
Risk Assessment
Risk of writing malicious files on the victim's system, potentially leading to account takeover or privilege escalation.
Recommendation
Update TeamViewer to version 15.81.5 or later. Limit trust in remote session participants and monitor file transfers.
Other vulnerabilities in TeamViewer
See all- CVE-2026-19042High
A command injection vulnerability in TeamViewer Full Client and Host for Linux prior to version 15.81.5 allows a remote attacker to execute arbitrary commands in the context of the current user via a specially crafted URL sent through the out-of-session chat feature. Exploitation requires user interaction by clicking the malicious link.
- CVE-2026-12703High
TeamViewer Full Client and Host for macOS before version 15.80 contain a business logic error that allows an authenticated attacker to bypass configured 2FA for connection approval via Unattended Access and establish a remote connection to a macOS host.
Original NVD description (English source)
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.