{"id":"ALPINE-CVE-2021-36386","details":"report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic platform results in an impact beyond an inconvenience to the client user.","modified":"2026-10-27T08:33:27.037413610Z","published":"2021-07-30T14:15:18.140Z","upstream":["CVE-2021-36386"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-36386"}],"affected":[{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}},{"package":{"name":"fetchmail","ecosystem":"Alpine:v3.24","purl":"pkg:apk/alpine/fetchmail?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.20-r0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-36386.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}