{"action":"Upgrade libvncserver to 0.9.11+dfsg-1.2 or later.","affected":[{"fixed":"0.9.11+dfsg-1.2","introduced":"0"}],"component":"libvncserver","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["0.9.11+dfsg-1.2"],"id":"tcs_01M5NDBTQJCZZDNNWA6HPFVR0D","modified_at":"2026-10-23T18:03:05.729187317Z","published_at":"2020-06-17T16:15:11.367Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-21247","https://security-tracker.debian.org/tracker/CVE-2018-21247"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-21247#Debian:14/libvncserver","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-21247"}],"summary":"An issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialized memory contents) in the libvncclient/rfbproto.c ConnectToRFBRepeater function."}