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[SITUATION] · [ACTIVE] · [TECHNOLOGY]

2 clusters · 5 sources · 3 days · First seen 5 days ago · Last updated 3 days ago

Remote desktop software security vulnerabilities

Overview

Security vulnerabilities have been identified in multiple remote desktop applications.

In late October 2026, TeamViewer released version 15.83 to address three flaws, including a high-severity buffer overflow vulnerability tracked as CVE-2026-111585. This flaw allows a compromised host machine to attack the viewer, potentially bypassing operating system defenses to execute arbitrary code on Windows, Linux, and macOS systems.

Following this, a pre-authentication remote code execution vulnerability was discovered in TightVNC Viewer 2.8.88 x64 for Windows. The issue stems from an integer truncation error during framebuffer size calculations, which leads to memory corruption. Researchers noted that an attacker using a malicious VNC server could exploit this to launch processes via the Windows CreateProcessW function. Users are advised to update to version 2.8.90 to mitigate the risk.

Entities

windows · OpenAI · ChatGPT · TeamViewer · macOS

Timeline

3 days ago

[TECHNOLOGY] 2 sources
TightVNC Viewer vulnerability allows remote code execution
A critical vulnerability in TightVNC Viewer 2.8.88 x64 allows attackers to execute code on Windows PCs via a malicious VNC server before authentication occurs.
5 days ago

[TECHNOLOGY] 4 sources
TeamViewer fixes critical vulnerability allowing host-to-viewer attacks
TeamViewer released version 15.83 to fix a high-severity flaw (CVE-2026-111585) that allows a remote host to crash a viewer's session or execute code on Windows machines.

Sources

cybernoz.com · drweb.de · livingwellspendingless.com · sempreupdate.com.br · turbolab.it