{"id":"USN-8788-1","summary":"clamav vulnerabilities","details":"It was discovered that ClamAV incorrectly handled certain zip archive\nfiles. A remote attacker could possibly use this issue to cause ClamAV\nto crash, resulting in a denial of service. (CVE-2026-20337,\nCVE-2026-20338)\n\nIt was discovered that ClamAV incorrectly handled certain PESpin files.\nA remote attacker could possibly use this issue to cause ClamAV to\ncrash, resulting in a denial of service. (CVE-2026-20339)\n\nIt was discovered that ClamAV incorrectly handled certain GPT files. A\nremote attacker could possibly use this issue to cause ClamAV to crash,\nresulting in a denial of service. (CVE-2026-20345)\n\nIt was discovered that ClamAV incorrectly handled certain PDF files. A\nremote attacker could possibly use this issue to cause ClamAV to crash,\nresulting in a denial of service. (CVE-2026-20346)\n\nIt was discovered that ClamAV incorrectly handled certain Mach-O files.\nA remote attacker could possibly use this issue to cause ClamAV to\ncrash, resulting in a denial of service. (CVE-2026-20347)\n\nIt was discovered that ClamAV incorrectly handled certain XAR files. A\nremote attacker could possibly use this issue to cause ClamAV to crash,\nresulting in a denial of service. (CVE-2026-20348)","modified":"2026-09-21T21:42:45.295245362Z","published":"2026-09-21T12:05:10Z","related":["UBUNTU-CVE-2026-20337","UBUNTU-CVE-2026-20338","UBUNTU-CVE-2026-20339","UBUNTU-CVE-2026-20345","UBUNTU-CVE-2026-20346","UBUNTU-CVE-2026-20347","UBUNTU-CVE-2026-20348"],"upstream":["CVE-2026-20337","CVE-2026-20338","CVE-2026-20339","CVE-2026-20345","CVE-2026-20346","CVE-2026-20347","CVE-2026-20348","UBUNTU-CVE-2026-20337","UBUNTU-CVE-2026-20338","UBUNTU-CVE-2026-20339","UBUNTU-CVE-2026-20345","UBUNTU-CVE-2026-20346","UBUNTU-CVE-2026-20347","UBUNTU-CVE-2026-20348"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8788-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-20337"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-20338"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-20339"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-20345"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-20346"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-20347"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-20348"}],"affected":[{"package":{"name":"clamav","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/clamav?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.4+dfsg-0ubuntu0.22.04.1"}]}],"versions":["0.103.3+dfsg-1","0.103.4+dfsg-1","0.103.4+dfsg-1build1","0.103.5+dfsg-1","0.103.6+dfsg-0ubuntu0.22.04.1","0.103.8+dfsg-0ubuntu0.22.04.1","0.103.9+dfsg-0ubuntu0.22.04.1","0.103.11+dfsg-0ubuntu0.22.04.1","0.103.12+dfsg-0ubuntu0.22.04.1","1.4.3+dfsg-0ubuntu0.22.04.1","1.4.4+dfsg-0ubuntu0.22.04.1","1.5.3+dfsg-0ubuntu0.22.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"clamav","binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamav-base","binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamav-daemon","binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1"},{"binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1","binary_name":"clamav-docs"},{"binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1","binary_name":"clamav-freshclam"},{"binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1","binary_name":"clamav-milter"},{"binary_name":"clamav-testfiles","binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1"},{"binary_name":"clamdscan","binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1"},{"binary_name":"libclamav12","binary_version":"1.5.4+dfsg-0ubuntu0.22.04.1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-20337","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":"Ubuntu","score":"medium"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-20338"},{"id":"CVE-2026-20339","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-20345"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-20346"},{"id":"CVE-2026-20347","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":"Ubuntu","score":"medium"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-20348"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8788-1.json"}},{"package":{"name":"clamav","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/clamav?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.4+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","1.0.8+dfsg-0ubuntu0.24.04.1","1.4.3+dfsg-0ubuntu0.24.04.1","1.4.4+dfsg-0ubuntu0.24.04.1","1.5.3+dfsg-0ubuntu0.24.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"clamav","binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamav-base","binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1"},{"binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1","binary_name":"clamav-daemon"},{"binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1","binary_name":"clamav-docs"},{"binary_name":"clamav-freshclam","binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1"},{"binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1","binary_name":"clamav-milter"},{"binary_name":"clamav-testfiles","binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1"},{"binary_name":"clamdscan","binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1"},{"binary_version":"1.5.4+dfsg-0ubuntu0.24.04.1","binary_name":"libclamav12"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8788-1.json","cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"id":"CVE-2026-20337","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-20338","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-20339","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-20345","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-20346","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-20347"},{"id":"CVE-2026-20348","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]}]}}},{"package":{"name":"clamav","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/clamav?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.4+dfsg-0ubuntu0.26.04.1"}]}],"versions":["1.4.3+dfsg-0ubuntu2","1.4.3+dfsg-0ubuntu3","1.4.3+dfsg-2ubuntu1","1.4.3+dfsg-2ubuntu2","1.4.3+dfsg-2ubuntu3","1.4.4+dfsg-0ubuntu0.26.04.1","1.5.3+dfsg-0ubuntu0.26.04.1","1.5.3+dfsg-0ubuntu0.26.04.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1","binary_name":"clamav"},{"binary_name":"clamav-base","binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1"},{"binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1","binary_name":"clamav-daemon"},{"binary_name":"clamav-docs","binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1"},{"binary_name":"clamav-freshclam","binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1"},{"binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1","binary_name":"clamav-milter"},{"binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1","binary_name":"clamav-testfiles"},{"binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1","binary_name":"clamdscan"},{"binary_name":"libclamav12","binary_version":"1.5.4+dfsg-0ubuntu0.26.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8788-1.json","cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"id":"CVE-2026-20337","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":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-20338","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":"Ubuntu","score":"medium"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-20339"},{"id":"CVE-2026-20345","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-20346"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-20347"},{"id":"CVE-2026-20348","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}]}}}],"schema_version":"1.9.0"}