Improper Access Control in TeamViewer Full Client and Host Setup
CVE-2026-111583

7.3HIGH

Key Information:

Vendor

Teamviewer

Status
Full Client
Host
Vendor
CVE Published:
27 October 2026

What is CVE-2026-111583?

An improper access control vulnerability exists in the installer staging directory of TeamViewer Full Client and Host for Windows, affecting versions prior to 15.82. This flaw allows a local authenticated user with limited privileges to execute arbitrary commands with SYSTEM-level permissions. By placing a specially crafted installer options file, the attacker can manipulate the Advanced Asset Management installer during service activation, leading to potential system compromises.

Affected Version(s)

Full Client Windows 0 < 15.82

Full Client Windows 15.64.0 (Legacy windows 7 & 8) < 15.64.10 (Legacy windows 7 & 8)

Host Windows 0 < 15.82

References

https://www.teamviewer.com/en/resources/trust-center/secu...
vendor-advisory

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

0x_alibabas (Giuliano Sanfins)
.