by Kastro
Paper/Archive/CVE-2021-42785

CVE-2021-42785

GlavSoft LLC TightVNC Viewer — Buffer Overflow in tvnviewer.exe via Crafted Packet in TightVNC Viewer 2.8.59

EPSS 2%CVSS 9.8
critical.is priorityof 100
46
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 83.6.836 × 2016.7No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
TightVNC Viewer2.8.59 – 2.8.59–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

reftightvnc.com/whatsnew.php