CVE-2026-107611

An out-of-bounds read vulnerability in the ZRLE decoder of GlavSoft TightVNC Viewer for Windows before 2.8.88 allows a malicious or compromised VNC server to read heap memory beyond the palette allocation and crash the viewer by sending ZRLE-encoded tiles whose palette indices exceed the declared...

PT-2026-107952

Name of the Vulnerable Software and Affected Versions GlavSoft TightVNC Viewer for Windows versions prior to 2.8.88 Description An out-of-bounds read issue exists in the ZRLE decoder. A malicious or compromised VNC server can trigger this by sending ZRLE-encoded tiles with palette indices that...