{"id":"CVE-2021-1404","details":"A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.","modified":"2026-04-10T04:29:05.095348Z","published":"2021-04-08T05:15:13.267Z","related":["SUSE-SU-2021:1174-1","SUSE-SU-2021:1189-1","SUSE-SU-2021:1190-1","SUSE-SU-2021:14692-1","openSUSE-SU-2021:0555-1","openSUSE-SU-2024:10685-1"],"references":[{"type":"ADVISORY","url":"https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cisco-talos/clamav","events":[{"introduced":"0"},{"last_affected":"31824a659dff37ae03e3419395bb68e659c2b165"},{"introduced":"0"},{"last_affected":"e7f5f53737f51f3b8395c12b1f804dc6c2181169"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"0.103.0"},{"introduced":"0"},{"last_affected":"0.103.1"}]}}],"versions":["clamav-0.101.0","clamav-0.102.0","clamav-0.103.0","clamav-0.103.0-rc","clamav-0.103.0-rc2","clamav-0.103.1","clamav-0.96","clamav-0.96.2","clamav-0.96.3","clamav-0.96.4","clamav-0.96.5","clamav-0.96rc1","clamav-0.96rc2","clamav-0.97","clamav-0.97rc","merge-llvm-97877","r5076"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-1404.json"}}],"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"}]}