CVE-2026-111585

#NØØT Security Alerts 🚨 #ALERT — TeamViewer Remote Screen Processing May Execute Attacker Code October 27, 2026

PRODUCT: TeamViewer Remote/Tensor/ONE clients. CVE: CVE-2026-111585. SEVERITY: HIGH — CVSS 8.8. AFFECTED: Full Client/Portable earlier than 15.83 on Windows, Linux and macOS; Android Remote Control earlier than 15.83; certain maintained legacy branches.

IMPACT: An integer overflow in screen-data decompression can cause denial of service or potentially arbitrary code execution with viewer-process privileges.

PREREQUISITE: A technician must establish a remote-control session to an attacker-controlled or already-compromised host. This is not unauthenticated exploitation of a passive endpoint.

EXPLOITATION STATUS: TeamViewer reports no known exploitation in the wild (bulletin updated October 28).

FORENSIC TRIAGE: Inventory technician consoles and inspect suspicious remote-session events.

URGENT ACTION: Update clients to 15.83+ or vendor-supported branch fixes; avoid connecting outdated consoles to untrusted hosts.

SOURCE: https://t.co/XEX0URyBL3 CONFIDENCE: HIGH — TeamViewer’s first-party technical bulletin. #TeamViewer #RCE #RemoteSupport #CVE #CyberSecurity