{"action":"Upgrade libx11 to 2:1.6.6-1 or later.","affected":[{"fixed":"2:1.6.6-1","introduced":"0"}],"component":"libx11","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2:1.6.6-1"],"id":"tcs_01M5ND2QWAX8YJNK8KM309TKB4","modified_at":"2026-10-23T18:02:29.020152544Z","published_at":"2018-08-24T19:29:01.567Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2018-14600","https://security-tracker.debian.org/tracker/CVE-2018-14600"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2018-14600#Debian:14/libx11","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2018-14600"}],"summary":"An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 bytes)"}