{"id":"UBUNTU-CVE-2025-20128","details":"A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the . Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.","modified":"2026-04-22T15:32:53.774619Z","published":"2025-01-23T00:00:00Z","related":["USN-7229-1"],"upstream":["CVE-2025-20128"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-20128"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-20128"},{"type":"REPORT","url":"https://blog.clamav.net/2025/01/clamav-142-and-108-security-patch.html"},{"type":"REPORT","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-ole2-H549rphA"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7229-1"}],"affected":[{"package":{"name":"clamav","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/clamav@1.0.8+dfsg-0ubuntu0.24.04.1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8+dfsg-0ubuntu0.24.04.1"}]}],"versions":["1.0.2+dfsg-1ubuntu1","1.0.3+dfsg-2ubuntu1","1.0.4+dfsg-0ubuntu1","1.0.5+dfsg-1ubuntu1","1.0.5+dfsg-1.1ubuntu2","1.0.5+dfsg-1.1ubuntu3","1.0.7+dfsg-0ubuntu0.24.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"clamav","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamav-base","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamav-daemon","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamav-docs","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamav-freshclam","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamav-milter","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamav-testfiles","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamdscan","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"},{"binary_name":"libclamav11t64","binary_version":"1.0.8+dfsg-0ubuntu0.24.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-20128.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"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}