{"id":"ALPINE-CVE-2021-33586","details":"InspIRCd 3.8.0 through 3.9.x before 3.10.0 allows any user (able to connect to the server) to access recently deallocated memory, aka the \"malformed PONG\" issue.","modified":"2026-11-03T06:32:34.135623598Z","published":"2021-05-27T05:15:06.993Z","upstream":["CVE-2021-33586"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-33586"}],"affected":[{"package":{"name":"inspircd","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/inspircd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"3.10.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33586.json"}},{"package":{"name":"inspircd","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/inspircd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"3.10.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33586.json"}},{"package":{"name":"inspircd","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/inspircd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"3.10.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33586.json"}},{"package":{"name":"inspircd","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/inspircd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"3.10.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33586.json"}},{"package":{"name":"inspircd","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/inspircd?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.8.0"},{"fixed":"3.10.0-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-33586.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}