CVE-2008-4770: Realvnc

High severity, CVSS 10.0. EPSS: 4.1% chance of exploitation in the next 30 days.

The CMsgReader::readRect function in the VNC Viewer component in RealVNC VNC Free Edition 4.0 through 4.1.2, Enterprise Edition E4.0 through E4.4.2, and Personal Edition P4.0 through P4.4.2 allows remote VNC servers to execute arbitrary code via crafted RFB protocol data, related to "encoding type."

Affected products

• Realvnc Realvnc: version 4.0 only; version 4.1.2 only; version 4.4.2 only; version e4.0 only; version p4.0 only; version p4.4.2 only

Published 2009-01-16. Last modified 2026-06-16.