{"id":"UBUNTU-CVE-2023-49991","details":"Espeak-ng 1.52-dev was discovered to contain a Stack Buffer Underflow via the function CountVowelPosition at synthdata.c.","modified":"2026-01-30T02:32:03.531951Z","published":"2023-12-12T14:15:00Z","related":["USN-6858-1"],"upstream":["CVE-2023-49991"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-49991"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-49991"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6858-1"}],"affected":[{"package":{"name":"espeak-ng","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/espeak-ng@1.49.2+dfsg-1ubuntu0.1~esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.49.2+dfsg-1ubuntu0.1~esm1"}]}],"versions":["1.49.1+dfsg-2","1.49.2+dfsg-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"1.49.2+dfsg-1ubuntu0.1~esm1","binary_name":"espeak-ng"},{"binary_version":"1.49.2+dfsg-1ubuntu0.1~esm1","binary_name":"espeak-ng-data"},{"binary_version":"1.49.2+dfsg-1ubuntu0.1~esm1","binary_name":"espeak-ng-espeak"},{"binary_version":"1.49.2+dfsg-1ubuntu0.1~esm1","binary_name":"libespeak-ng-dev"},{"binary_version":"1.49.2+dfsg-1ubuntu0.1~esm1","binary_name":"libespeak-ng-libespeak-dev"},{"binary_version":"1.49.2+dfsg-1ubuntu0.1~esm1","binary_name":"libespeak-ng-libespeak1"},{"binary_version":"1.49.2+dfsg-1ubuntu0.1~esm1","binary_name":"libespeak-ng1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49991.json"}},{"package":{"name":"espeak-ng","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/espeak-ng@1.50+dfsg-6ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.50+dfsg-6ubuntu0.1"}]}],"versions":["1.49.2+dfsg-8","1.50+dfsg-4","1.50+dfsg-5","1.50+dfsg-6"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.50+dfsg-6ubuntu0.1","binary_name":"espeak-ng"},{"binary_version":"1.50+dfsg-6ubuntu0.1","binary_name":"espeak-ng-data"},{"binary_version":"1.50+dfsg-6ubuntu0.1","binary_name":"espeak-ng-espeak"},{"binary_version":"1.50+dfsg-6ubuntu0.1","binary_name":"libespeak-ng-dev"},{"binary_version":"1.50+dfsg-6ubuntu0.1","binary_name":"libespeak-ng-libespeak-dev"},{"binary_version":"1.50+dfsg-6ubuntu0.1","binary_name":"libespeak-ng-libespeak1"},{"binary_version":"1.50+dfsg-6ubuntu0.1","binary_name":"libespeak-ng1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49991.json"}},{"package":{"name":"espeak-ng","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/espeak-ng@1.50+dfsg-10ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.50+dfsg-10ubuntu0.1"}]}],"versions":["1.50+dfsg-7build2","1.50+dfsg-8","1.50+dfsg-9","1.50+dfsg-10"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.50+dfsg-10ubuntu0.1","binary_name":"espeak-ng"},{"binary_version":"1.50+dfsg-10ubuntu0.1","binary_name":"espeak-ng-data"},{"binary_version":"1.50+dfsg-10ubuntu0.1","binary_name":"espeak-ng-espeak"},{"binary_version":"1.50+dfsg-10ubuntu0.1","binary_name":"libespeak-ng-dev"},{"binary_version":"1.50+dfsg-10ubuntu0.1","binary_name":"libespeak-ng-libespeak-dev"},{"binary_version":"1.50+dfsg-10ubuntu0.1","binary_name":"libespeak-ng-libespeak1"},{"binary_version":"1.50+dfsg-10ubuntu0.1","binary_name":"libespeak-ng1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-49991.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L"},{"type":"Ubuntu","score":"medium"}]}