CVE-2026-92377
Local Privilege Escalation via DLL Sideloading in TeamViewer Patch Management for Windows
Improper access control in the Patch Management update mechanism of TeamViewer Full Client and Host for Windows prior to version 15.82 allows a local authenticated attacker with low privileges to supply a signed executable through a forged IPC response and cause it to load a malicious DLL from a user-writable temporary directory. Successful exploitation results in arbitrary code execution with NT AUTHORITY\SYSTEM privileges.
Fixes and workarounds
Fix
Update to the latest available version.
Source: CNA: TVAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Full Client TeamViewer Platforms: Windows |
≥ 0; < 15.82 (affected, custom) ≥ 15.64.0 (Legacy Windows 7 & 8); < 15.64.10 (Legacy Windows 7 & 8) (affected, custom) ≥ 14.7.0; < 14.7.48868 (affected, custom) ≥ 13.2.0; < 13.2.36231 (affected, custom) Other versions: unaffected |
CNA: TV |
| Host TeamViewer Platforms: Windows |
≥ 0; < 15.82 (affected, custom) ≥ 15.64.0 (Legacy Windows 7 & 8); < 15.64.10 (Legacy Windows 7 & 8) (affected, custom) ≥ 14.7.0; < 14.7.48868 (affected, custom) ≥ 13.2.0; < 13.2.36231 (affected, custom) Other versions: unaffected |
CNA: TV |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.8 high |
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA: TV |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1012/CNA: TV · vendor-advisory
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