TeamViewer lets people control a computer from far away. On Oct 27, 2026 it fixed bugs in the app. On Mac and Linux, a bad remote session or a bad session recording file could run a program on your computer. Another bug could let someone with a basic account on a Mac gain full control. A bug on all systems could crash the app or run code if you connect to a bad computer. Version 15.83 fixes these.
- Status
- Patched: update now
- Being attacked?
- No[1]
- Severity
- High
- Updated
TeamViewer says it is not aware of any attacks in the wild. Severity: TeamViewer rates it up to 8.8 out of 10 (High). First reported .
Am I affected?
You are at risk if you have TeamViewer older than 15.83. Open TeamViewer and click Help > About TeamViewer to see your version.
| App | Device | Affected | Fixed in |
|---|---|---|---|
| TeamViewer | Windows | TeamViewer Full Client older than 15.83 | 15.83[1] |
| TeamViewer | Mac | TeamViewer Full Client and Host older than 15.83 | 15.83[1] |
| TeamViewer | Linux | TeamViewer Full Client older than 15.83 | 15.83[1] |
How to check your version
These checks only look. They do not change anything on your computer.
TeamViewer on Windows
Easy way: Open TeamViewer. Click Help > About TeamViewer (or the gear icon > About).
Or type this in PowerShellRead-only. It only reads the version and changes nothing.
Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*','HKLM:\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\*','HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*' -ErrorAction SilentlyContinue | Where-Object DisplayName -like '*TeamViewer*' | Select-Object DisplayName,DisplayVersion
TeamViewer on Mac
Easy way: Open TeamViewer. Menu bar: TeamViewer > About TeamViewer.
Or type this in TerminalRead-only. It only reads the version and changes nothing.
defaults read "/Applications/TeamViewer.app/Contents/Info" CFBundleShortVersionString
TeamViewer on Linux
Easy way: Open the app and look in its Help or About menu, or check your software manager.
How to fix it
- Open TeamViewer.
- Click Help > Check for new version (or the update message inside the app).
- Or go to the official download page and install the newest version.
- Only connect to computers you know and trust until you have updated.
More on each app: Is my TeamViewer up to date?
Official links
Check before installing, and only use these official links or the app's own update button.
For AI agents
This page as data: /incidents/teamviewer-15-83-security-update.json. All problems: /feed.json. Use read-only checks only, and ask before installing anything.
Tracking numbers (CVE): CVE-2026-92372, CVE-2026-92374, CVE-2026-111585
Sources
- MakerTeamViewer bulletin TV-2026-1011: Security update for TeamViewer clients (Oct 27, 2026)
- MakerTeamViewer bulletin TV-2026-1012: Remote Management add-ons (Oct 27, 2026)
"Maker", "CISA", "NVD", "GitHub advisory" and "Official notice" are official sources. "Researcher" and "News" are extra context.