Home/CVE/TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations.
CVE

CVE-2021-34803

TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations.

TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations.

HIGH · CVSS 7.8 EPSS 0.00113
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules11 YARA rules0
⬡

Weakness Classification

CWE-427Uncontrolled Search Path Element
▤

Affected Products & Versions

7
teamviewer< 9.0.259145
teamviewer>= 10.0.2551 and < 10.0.259144
teamviewer>= 11.0.90968 and < 11.0.259143
teamviewer>= 12.0.92876 and < 12.0.259142
teamviewer>= 13.0.5058 and < 13.2.36222
teamviewer>= 14.0.8346 and < 14.2.56678
teamviewer>= 14.3.4730 and < 14.7.48644
◈

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

7.8
HIGH · 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 NVD16 Jun 2021 · 03:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-OT-white-2021-icsa-21-308-01
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://community.teamviewer.com/English/discussion/111147/windows-v9-0-259145Release NotesVendor Advisory
https://community.teamviewer.com/English/discussion/111149/windows-v10-0-259144Release NotesVendor Advisory
https://community.teamviewer.com/English/discussion/111150/windows-v11-0-259143Release NotesVendor Advisory
https://community.teamviewer.com/English/discussion/111151/windows-v12-0-259142Release NotesVendor Advisory
https://community.teamviewer.com/English/discussion/111152/windows-v13-2-36222Release NotesVendor Advisory
https://community.teamviewer.com/English/discussion/111153/windows-v14-2-56678Release NotesVendor Advisory
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