cvedb.io
CVE-2021-42785
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2021-11-23T22:15:08.133 · Last modified 2026-06-17T04:10:08.660

Summary

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 products

tightvnc — tightvnc

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.