{"id":"CVE-2020-14396","details":"An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference.","modified":"2026-04-11T12:39:57.509520Z","published":"2020-06-17T16:15:11.697Z","references":[{"type":"ADVISORY","url":"https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4434-1/"},{"type":"FIX","url":"https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf"},{"type":"FIX","url":"https://github.com/LibVNC/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/libvnc/libvncserver","events":[{"introduced":"0"},{"last_affected":"0a70095271d845d16a3ed17354841b01f33963ad"},{"fixed":"33441d90a506d5f3ae9388f2752901227e430553"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"0.9.12"}]}}],"versions":["LibVNCServer-0.9.10","LibVNCServer-0.9.11","LibVNCServer-0.9.12","LibVNCServer-0.9.8","LibVNCServer-0.9.9","X11VNC_0_9_10","X11VNC_0_9_11","X11VNC_0_9_12","X11VNC_0_9_7","X11VNC_0_9_8","X11VNC_0_9_9","X11VNC_REL_0_9_4","X11VNC_REL_0_9_5","X11VNC_REL_0_9_6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14396.json","vanir_signatures_modified":"2026-04-11T12:39:57Z","vanir_signatures":[{"source":"https://github.com/libvnc/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553","deprecated":false,"signature_version":"v1","signature_type":"Function","digest":{"length":2497,"function_hash":"289870025509888091998254113739023981642"},"id":"CVE-2020-14396-a63a5cc6","target":{"function":"open_ssl_connection","file":"libvncclient/tls_openssl.c"}},{"source":"https://github.com/libvnc/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553","deprecated":false,"signature_version":"v1","signature_type":"Line","digest":{"line_hashes":["80226186285922043742937663968878156146","23982019333981318047145580796055385006","78556645990089934348837580570819060018","129536370082382921633149900127119405369","179482101782982562967665731851017857863","57481811473761647249782608015147496236","170469348421599386093090533339237144854","132784373091711427979626134283971151697"],"threshold":0.9},"id":"CVE-2020-14396-c848c6fe","target":{"file":"libvncclient/tls_openssl.c"}}],"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.10"}]},{"events":[{"introduced":"0"},{"last_affected":"20.04"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"3.0.0.0"},{"fixed":"3.2.1.0"}]},{"events":[{"introduced":"3.0.0.0"},{"fixed":"3.2.1.0"}]},{"events":[{"introduced":"3.0.0.0"},{"fixed":"3.2.1.0"}]},{"events":[{"introduced":"3.0.0.0"},{"fixed":"3.2.1.0"}]},{"events":[{"introduced":"3.0.0.0"},{"fixed":"3.2.1.0"}]},{"events":[{"introduced":"3.0.0.0"},{"fixed":"3.2.1.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}