TeamViewer this week announced patches for a high-severity elevation of privilege vulnerability in its remote access solutions for Windows.
Tracked as CVE-2025-0065 (CVSS score of 7.8), the bug is described as an improper neutralization of argument delimiters in the ‘TeamViewer_service.exe’ component of the software.
Successful exploitation of the security defect, TeamViewer warns, could allow an unprivileged attacker with local access to a Windows system to perform argument injection and elevate their privileges.
“To exploit this vulnerability, an attacker needs local access to the Windows system,” TeamViewer underlines in its advisory.
The bug impacts TeamViewer Full Client and TeamViewer Host versions 11.x, 12.x, 13.x, 14.x, and 15.x, and was addressed with the release of versions 15.62, 14.7.48799, 13.2.36226, 12.0.259319, and 11.0.259318 of the software.
TeamViewer also notes that it has no indication that the flaw has been exploited in the wild, but recommends that all users update their TeamViewer Clients for Windows.
According to the company, the vulnerability was reported by an anonymous researcher via Trend Micro’s Zero Day Initiative (ZDI).
Although TeamViewer says it has not seen evidence of in-the-wild exploitation of this bug, users are advised to update their TeamViewer applications as soon as possible, as it is not uncommon for threat actors to exploit the company’s software in attacks.
Previously, attackers have been observed deploying TeamViewer applications either to connect remotely to compromised devices, or to abuse them for loading malicious libraries and deploying backdoors and other malware. In some cases, threat actors targeted victims with malicious versions of TeamViewer.
In September 2024, Claroty warned that the use of remote access tools such as TeamViewer and AnyDesk in operational technology (OT) environments can increase the attack surface and expose organizations to additional risks.
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