What’s Vulnerable › Vulnerabilities

CVE-2019-18196

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-10-24 · updated 2026-06-17
• Weakness: CWE-426

Description

A DLL side loading vulnerability in the Windows Service in TeamViewer versions up to 11.0.133222 (fixed in 11.0.214397), 12.0.181268 (fixed in 12.0.214399), 13.2.36215 (fixed in 13.2.36216), and 14.6.4835 (fixed in 14.7.1965) on Windows could allow an attacker to perform code execution on a target system via a service restart where the DLL was previously installed with administrative privileges. Exploitation requires that an attacker be able to create a new file in the TeamViewer application directory; directory permissions restrict that by default.

Affected products

• TeamViewer: before 11.0.214397; from 12.0.0 before 12.0.214399; from 13.0.0 before 13.2.36216; from 14.0.0 before 14.7.1965 — fixed in 11.0.214397, 12.0.214399, 13.2.36216, 14.7.1965

How to fix

Upgrade to a fixed version: TeamViewer 11.0.214397, 12.0.214399, 13.2.36216, 14.7.1965. Check the vendor advisory for mitigations.

References

• https://community.teamviewer.com/t5/Announcements/Security-bulletin-CVE-2019-18196/td-p/74564
• https://safebreach.com/Post/TeamViewer-Windows-Client-v11-to-v14-DLL-Preloading-and-Potential-Abuses-CVE-2019-18196
• https://community.teamviewer.com/t5/Announcements/Security-bulletin-CVE-2019-18196/td-p/74564
• https://safebreach.com/Post/TeamViewer-Windows-Client-v11-to-v14-DLL-Preloading-and-Potential-Abuses-CVE-2019-18196

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