Home/CVE/A DLL side loading vulnerability in the Windows Service in TeamViewer versions up to 11.0.133222 (fixed in 11.0.214397),
CVE

CVE-2019-18196

A DLL side loading vulnerability in the Windows Service in TeamViewer versions up to 11.0.133222 (fixed in 11.0.214397),

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.

MEDIUM · CVSS 6.7 EPSS 0.00163
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules11 YARA rules0
⬡

Weakness Classification

CWE-426Untrusted Search Path
▤

Affected Products & Versions

4
teamviewer< 11.0.214397
teamviewer>= 12.0.0 and < 12.0.214399
teamviewer>= 13.0.0 and < 13.2.36216
teamviewer>= 14.0.0 and < 14.7.1965
◈

Sigma Hunt Rules

11
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumTeamViewer Remote Session
productmediumInstallation of TeamViewer Desktop
productmediumTeamViewer Domain Query By Non-TeamViewer Application
productlowTeamViewer Log File Deleted
productcriticalHackTool - Windows Credential Editor (WCE) Execution
productcriticalWindows Credential Editor Registry
▣

Scoring & Timeline

6.7
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Oct 2019 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://community.teamviewer.com/t5/Announcements/Security-bulletin-CVE-2019-18196/td-p/74564Vendor Advisory
https://safebreach.com/Post/TeamViewer-Windows-Client-v11-to-v14-DLL-Preloading-and-Potential-Abuses-CVE-2019-18196
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