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CVE-2021-42785

Published: 23 November 2021

Buffer Overflow vulnerability in tvnviewer.exe of TightVNC Viewer allows a remote attacker to execute arbitrary instructions via a crafted FramebufferUpdate packet from a VNC server.

Priority

Medium

CVSS 3 base score: 9.8

Status

Package Release Status
tightvnc
Launchpad, Ubuntu, Debian
Upstream Not vulnerable

Ubuntu 21.10 (Impish Indri) Not vulnerable

Ubuntu 21.04 (Hirsute Hippo) Not vulnerable

Ubuntu 20.04 LTS (Focal Fossa) Not vulnerable

Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(out of standard support)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable