View at Official debian advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2018-20021 not yet assigned priority: Debian including 4 source packages (libvncserver, ssvnc, tightvnc, veyon), 20 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 20.
LibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a CWE-835: Infinite loop vulnerability in VNC client code. Vulnerability allows attacker to consume excessive amount of resources like CPU and RAM