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Vulnerability · Published Oct 27, 2026 · Assigned by TV

CVE-2026-92374Privilege Escalation via Insecure Package Handling in TeamViewer Full Client and Host for macOS

High 7.8

In plain English

A high-severity security flaw in Full Client from TeamViewer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)<0.1%top 99.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A time-of-check time-of-use (TOCTOU) race condition combined with improper symbolic link handling in the privileged helper of TeamViewer Full Client and Host prior to version 15.83 for macOS allows a local attacker with low privileges to bypass installer package verification and install a malicious package. Successful exploitation can lead to local privilege escalation to root.

Affected products (as reported)

VendorProductVersions
TeamViewer Full Client 0 – before 15.8314.7.0 – before 14.7.4886813.2.0 – before 13.2.154007
TeamViewer Host 0 – before 15.8314.7.0 – before 14.7.4886813.2.0 – before 13.2.154007

Weakness: CWE-367 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References