CVE-2017-5884: gtk-vnc before 0.7.0 does not properly check boundaries of subrectangle-containing tiles, which allows remo...

Security readout for executives and security teams

A malicious or compromised VNC server could attack a user’s gtk-vnc client by sending malformed screen update data. The reported impact is arbitrary code execution in gtk-vnc versions before 0.7.0. Business urgency depends on whether users or embedded applications connect to untrusted VNC servers. Exposure is most likely on Linux desktops, management tools, or applications that include gtk-vnc before 0.7.0 and initiate VNC connections. Risk is higher where users connect to third-party, customer, lab, or otherwise untrusted VNC servers. Prioritize remediation where gtk-vnc clients connect outside trusted environments. For internally controlled VNC-only use, handle through normal security patching, but do not ignore because the stated impact is remote code execution. Mitigation focus: Upgrade gtk-vnc to 0.7.0 or a vendor-fixed backported package.; Apply relevant Red Hat or Fedora security updates where applicable.; Restrict gtk-vnc clients to trusted VNC servers until patched..

Prepared

Jun 13, 2026, 06:02 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.