Description
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.
References (1)
Core 1
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://www.tightvnc.com/whatsnew.php
Scores
CVSS v3
9.8
EPSS
0.0091
EPSS Percentile
75.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-120
Status
published
Products (1)
tightvnc/tightvnc
< 2.8.59
Published
Nov 23, 2021
Tracked Since
Feb 18, 2026