CVE-2024-6053: TeamViewer Meeting Auth Bypass Vulnerability

CVE-2024-6053 Overview

CVE-2024-6053 is an improper access control vulnerability [CWE-359] in the clipboard synchronization feature of TeamViewer Full Client and TeamViewer Meeting. The flaw affects TeamViewer Full Client prior to version 15.57 and TeamViewer Meeting prior to version 15.55.3. During a meeting, clipboard contents on a participant's device can be unintentionally shared with the current presenter. This exposes any data the user copies while a session is active, including passwords, tokens, and confidential text. The issue is tracked under TeamViewer Security Bulletin TV-2024-1007 and impacts Windows, macOS, Linux, iOS, and Android builds.

Critical Impact

Sensitive clipboard content on meeting participant systems can leak to the meeting presenter without explicit user consent, resulting in confidentiality loss across supported desktop and mobile platforms.

Affected Products

• TeamViewer Full Client (TeamViewer) prior to version 15.57 on Windows, macOS, and Linux
• TeamViewer Meeting prior to version 15.55.3 on Windows, macOS, Android, and iOS
• Any host operating system (Microsoft Windows, Apple macOS, Linux) running the affected TeamViewer clients

Discovery Timeline

• 2024-08-28 - CVE-2024-6053 published to the National Vulnerability Database (NVD)
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-6053

Vulnerability Analysis

The vulnerability resides in the clipboard synchronization feature used during TeamViewer meetings. Clipboard synchronization is intended to allow controlled data exchange between session participants. In affected versions, access controls do not correctly restrict which participant can consume clipboard data. As a result, the active presenter can receive clipboard content from other participants without an explicit sharing action. Any text or object copied on a participant's system while a meeting is running becomes exposed to the presenter role. Because the leaked data may include credentials, session tokens, or business-confidential text, the flaw creates a direct exposure of sensitive information [CWE-359].

Root Cause

The root cause is improper access control on clipboard events distributed through the meeting channel. The client does not gate outbound clipboard synchronization on the participant's role or on an explicit user consent event. Instead, clipboard updates from any participant are routed to the current presenter as part of the synchronization workflow.

Attack Vector

Exploitation requires an attacker to act as the presenter in an active TeamViewer meeting with an affected client. The attacker does not need elevated privileges, but the victim must join the meeting and interact with their clipboard while the session is running. The attack occurs over the network through the TeamViewer meeting channel and yields confidentiality impact only. No integrity or availability impact is associated with this issue.

No public proof-of-concept exploit is available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. Refer to the TeamViewer Security Bulletin TV-2024-1007 for vendor technical details.

Detection Methods for CVE-2024-6053

Indicators of Compromise

• Installed TeamViewer Full Client versions earlier than 15.57 or TeamViewer Meeting versions earlier than 15.55.3 on managed endpoints.
• Meeting session logs showing clipboard synchronization events originating from participant roles rather than the presenter.
• Unexpected appearance of participant-copied text, credentials, or tokens in presenter-side applications following a meeting.

Detection Strategies

• Inventory endpoints running TeamViewer and flag installations that do not meet the fixed version thresholds using software asset management or EDR telemetry.
• Monitor process and network telemetry for TeamViewer.exe and related binaries participating in meetings on unpatched builds.
• Correlate clipboard access events on endpoints with active TeamViewer meeting sessions to identify potential exposure windows.

Monitoring Recommendations

• Alert on TeamViewer client versions detected below 15.57 (Full Client) or 15.55.3 (Meeting) across the fleet.
• Track outbound connections from TeamViewer clients to meeting infrastructure and correlate with user session activity.
• Review data loss prevention (DLP) telemetry for sensitive strings appearing in outbound TeamViewer traffic during meeting windows.

How to Mitigate CVE-2024-6053

Immediate Actions Required

• Upgrade TeamViewer Full Client to version 15.57 or later on Windows, macOS, and Linux endpoints.
• Upgrade TeamViewer Meeting to version 15.55.3 or later on Windows, macOS, Android, and iOS devices.
• Communicate to users that clipboard content may have been exposed during meetings on prior versions and instruct credential rotation where warranted.

Patch Information

TeamViewer addressed the issue in TeamViewer Full Client 15.57 and TeamViewer Meeting 15.55.3. Vendor guidance and download links are published in the TeamViewer Security Bulletin TV-2024-1007.

Workarounds

• Disable clipboard synchronization in TeamViewer client settings until patched versions are deployed enterprise-wide.
• Restrict use of TeamViewer meetings on affected versions to trusted internal presenters only.
• Train users to avoid copying sensitive data such as passwords or API tokens while participating in an active TeamViewer meeting.

# Configuration example: verify installed TeamViewer version on Windows endpoints
reg query "HKLM\SOFTWARE\TeamViewer" /v Version

# Example fleet-wide check via PowerShell
Get-ItemProperty "HKLM:\SOFTWARE\TeamViewer" |
  Select-Object Version |
  Where-Object { [version]$_.Version -lt [version]"15.57" }