Bas Levering

Security researcher & sysadmin · Netherlands · healthcare IT. Disclosed CVEs in identity / auth stacks. Building public research notes here.

A pre-auth heap overflow in libvncclient's Tight decoder

GHSA-v9pm-47h4-jcq8 — a malicious VNC server can crash or take over any client built on libvncclient, default build, no auth. My first CVE, and why the client trusting the server is the whole problem.

May 29, 2026 · 6 min · 1267 words · Bas Levering

hello

First post. What this site is.

May 28, 2026 · 1 min · 56 words · Bas Levering