TeamViewer Flaw Lets Remote Computers Attack Users Who Connect to Control Them
AI-summarised brief · reviewed before publication
TeamViewer has released version 15.83 to patch a critical remote‑code‑execution flaw (CVE‑2026‑111585) that allows a compromised host to attack the viewer in a remote‑control session. The vulnerability, rated 8.8/10, affects Full Client, Portable, and Android apps on Windows, Linux and macOS versions prior to 15.83. By exploiting a screen‑size integer overflow, a malicious host can crash the viewer’s TeamViewer and, on Windows, bypass OS defenses to execute arbitrary code. The attack requires only the victim’s acceptance of the session, no password or extra clicks, and works in the default configuration. The fix also addresses two additional high‑severity bugs, and users are urged to upgrade immediately; no known exploits or active attacks have been reported.
💡 Why It Matters
- · It flips the traditional attacker‑victim model, letting a remote device seize control of the machine that connects to it, exposing a widely used support tool to direct code execution.