CVE-2014-6052: The HandleRFBServerMessage function in libvncclient/rfbproto.c in LibVNCServer 0.9.9 and earlier does not c...

Security readout for executives and security teams

CVE-2014-6052 is a LibVNCServer/libvncclient bug where a malicious or compromised VNC server can crash a vulnerable VNC client, and sources say arbitrary code execution may be possible. Business risk is concentrated in systems that initiate VNC connections using LibVNCServer 0.9.9 or earlier, or downstream software embedding it. Exposure is most likely in older Linux distributions, embedded products, remote-support tools, or applications that include libvncclient from LibVNCServer 0.9.9 or earlier. Internet-facing VNC servers are not the primary exposure; the vulnerable side is the client connecting to an untrusted or compromised VNC server. Treat as a targeted remediation item, not an internet-wide emergency. Prioritize systems where administrators or automation connect to external or lower-trust VNC servers, because compromise of those clients could disrupt operations or potentially expose privileged environments. Mitigation focus: Inventory software that links or bundles LibVNCServer/libvncclient.; Upgrade affected packages using vendor advisories from your operating system or product supplier.; Avoid connecting vulnerable VNC clients to untrusted VNC servers..

Prepared

Jun 14, 2026, 05:41 UTC (UTC+00:00)

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