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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations.
- Record
CVE-2021-34803- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 4.4 Medium
AV:L/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-427
- Updated
- 2026-11-02
CVE List No score
TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations.
- Record
CVE-2021-34803- Updated
- 2026-11-02
EUVDEUVD-2021-21450 No score
TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations.
- Record
EUVD-2021-21450- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2x34-356c-v9qp
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.
- Record
GHSA-2x34-356c-v9qp- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-427
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-34803 is a high vulnerability (CVSS 7.8) in Teamviewer, published June 16, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.47%, the 40th percentile. No source names a fixed version.
References
community.teamviewer.com/English/discussion/111154/windows-v14-7-48644
nvd.nist.gov/vuln/detail/CVE-2021-34803
github.com/advisories/GHSA-2x34-356c-v9qp