{"api_version":"1","generated_at":"2026-08-08T05:02:49+00:00","cve":"CVE-2026-20347","urls":{"html":"https://cve.report/CVE-2026-20347","api":"https://cve.report/api/cve/CVE-2026-20347.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-20347","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-20347"},"summary":{"title":"ClamAV Mach-O File Format Processing Memory Corruption Vulnerability","description":"A vulnerability in the Mach-O file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device.\r\n\r\nThis vulnerability is due to improper boundary checks for content in Mach-O files during scanning, which may result in an out-of-bounds buffer read. An attacker could exploit this vulnerability by submitting a crafted Mach-O file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.","state":"PUBLISHED","assigner":"cisco","published_at":"2026-08-07 17:17:03","updated_at":"2026-08-07 22:16:58"},"problem_types":["CWE-125","CWE-125 Out-of-bounds Read"],"metrics":[{"version":"3.1","source":"psirt@cisco.com","type":"Secondary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"CVSSV3_1","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-WuuvVd26","name":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-WuuvVd26","refsource":"psirt@cisco.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-20347","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20347","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.0.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.2.19","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.3.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.2.13","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.1.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.3.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.2.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.3.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.2.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.2.7","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.1.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.3.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.2.9","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.3.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.1.7","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.2.11","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.2.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.1.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.3.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.3.9","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.2.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.1.9","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.0.9","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.2.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.0.7","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 6.3.7","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.12.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.8.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.11.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.12.4","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.10.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.12.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.8.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.10.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.12.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.12.6","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.14.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.10.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.12.7","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.12.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.6.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.9.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.11.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.7.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.13.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.8.4","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.13.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.9.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.12.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.13.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.0.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.1.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.0.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.0.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.1.7.21512","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.1.7","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.1.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.1.3.21242","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.1.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.1.5.21322","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.1.7.21417","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.1.0.14","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.2.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.3.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.4.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.5.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.6.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.7.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.8.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.9.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.10.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.10.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 2.11.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.14.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.15.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.15.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.15.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.15.4","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.15.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.15.6","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.16.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.16.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.16.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.16.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.18.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.18.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.21.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.21.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.21.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.21.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.22.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.22.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.22.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.22.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.22.4","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.24.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.24.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.24.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.24.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.24.4","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.26.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.24.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.26.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.27.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.15.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.17.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.17.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.17.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.19.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.4","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.6","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.23.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.23.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.7","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.20.8","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.25.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.25.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.25.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.27.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 1.27.2","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.3.13","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.3.15","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.4.1","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.4.1.20425","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.4.1.20439","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.4.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.4.3.20679","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.4.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.1.20813","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.1.20833","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.5","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.0.1.21160","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.0.1.21164","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.7","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.9","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.11","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.1.7.21585","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.13.21586","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.13.21598","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.2.1.21612","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.2.1.21650","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.15.21611","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.17.21680","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.2.3.30119","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.2.4.30130","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.4.0","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.19","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.4.1.30298","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.4.2.30317","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.4.1.30307","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.20","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.4.3","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.4.4.30419","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.4.4.30467","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 7.5.21.21732","platforms":[]},{"source":"CNA","vendor":"Cisco","product":"Cisco Secure Endpoint","version":"affected 8.4.5.30483","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[{"source":"CNA","title":"","value":"The Cisco PSIRT is aware that proof-of-concept exploit code is available for the vulnerabilities that are described in CVE-2026-20337 and CVE-2026-20338.\r\n\r\nThe Cisco PSIRT is not aware of proof-of-concept exploit code for any of the other vulnerabilities that are described in this advisory.\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory.","time":"","lang":"en"}],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-20347","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-08-07T21:00:30.257807Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-08-07T21:10:28.338Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unknown","product":"Cisco Secure Endpoint","vendor":"Cisco","versions":[{"status":"affected","version":"7.0.5"},{"status":"affected","version":"6.2.19"},{"status":"affected","version":"7.3.3"},{"status":"affected","version":"7.2.13"},{"status":"affected","version":"6.1.5"},{"status":"affected","version":"6.3.1"},{"status":"affected","version":"6.2.5"},{"status":"affected","version":"7.3.5"},{"status":"affected","version":"6.2.1"},{"status":"affected","version":"7.2.7"},{"status":"affected","version":"7.1.1"},{"status":"affected","version":"6.3.5"},{"status":"affected","version":"6.2.9"},{"status":"affected","version":"7.3.1"},{"status":"affected","version":"6.1.7"},{"status":"affected","version":"7.2.11"},{"status":"affected","version":"7.2.3"},{"status":"affected","version":"7.1.5"},{"status":"affected","version":"6.3.3"},{"status":"affected","version":"7.3.9"},{"status":"affected","version":"6.2.3"},{"status":"affected","version":"6.1.9"},{"status":"affected","version":"6.0.9"},{"status":"affected","version":"7.2.5"},{"status":"affected","version":"6.0.7"},{"status":"affected","version":"6.3.7"},{"status":"affected","version":"1.12.3"},{"status":"affected","version":"1.8.0"},{"status":"affected","version":"1.11.1"},{"status":"affected","version":"1.12.4"},{"status":"affected","version":"1.10.0"},{"status":"affected","version":"1.12.0"},{"status":"affected","version":"1.8.1"},{"status":"affected","version":"1.10.1"},{"status":"affected","version":"1.12.1"},{"status":"affected","version":"1.12.6"},{"status":"affected","version":"1.14.0"},{"status":"affected","version":"1.10.2"},{"status":"affected","version":"1.12.7"},{"status":"affected","version":"1.12.2"},{"status":"affected","version":"1.6.0"},{"status":"affected","version":"1.9.0"},{"status":"affected","version":"1.11.0"},{"status":"affected","version":"1.7.0"},{"status":"affected","version":"1.13.0"},{"status":"affected","version":"1.8.4"},{"status":"affected","version":"1.13.1"},{"status":"affected","version":"1.9.1"},{"status":"affected","version":"1.12.5"},{"status":"affected","version":"1.13.2"},{"status":"affected","version":"2.0.2"},{"status":"affected","version":"1.1.0"},{"status":"affected","version":"2.0.0"},{"status":"affected","version":"2.0.1"},{"status":"affected","version":"8.1.7.21512"},{"status":"affected","version":"8.1.7"},{"status":"affected","version":"8.1.5"},{"status":"affected","version":"8.1.3.21242"},{"status":"affected","version":"8.1.3"},{"status":"affected","version":"8.1.5.21322"},{"status":"affected","version":"8.1.7.21417"},{"status":"affected","version":"2.1.0.14"},{"status":"affected","version":"2.2.0"},{"status":"affected","version":"2.3.0"},{"status":"affected","version":"2.4.0"},{"status":"affected","version":"2.5.0"},{"status":"affected","version":"2.6.0"},{"status":"affected","version":"2.7.0"},{"status":"affected","version":"2.8.0"},{"status":"affected","version":"2.9.0"},{"status":"affected","version":"2.10.0"},{"status":"affected","version":"2.10.1"},{"status":"affected","version":"2.11.0"},{"status":"affected","version":"1.14.1"},{"status":"affected","version":"1.15.1"},{"status":"affected","version":"1.15.2"},{"status":"affected","version":"1.15.3"},{"status":"affected","version":"1.15.4"},{"status":"affected","version":"1.15.5"},{"status":"affected","version":"1.15.6"},{"status":"affected","version":"1.16.0"},{"status":"affected","version":"1.16.1"},{"status":"affected","version":"1.16.2"},{"status":"affected","version":"1.16.3"},{"status":"affected","version":"1.18.0"},{"status":"affected","version":"1.18.1"},{"status":"affected","version":"1.20.0"},{"status":"affected","version":"1.21.0"},{"status":"affected","version":"1.21.1"},{"status":"affected","version":"1.21.2"},{"status":"affected","version":"1.21.3"},{"status":"affected","version":"1.22.0"},{"status":"affected","version":"1.22.1"},{"status":"affected","version":"1.22.2"},{"status":"affected","version":"1.22.3"},{"status":"affected","version":"1.22.4"},{"status":"affected","version":"1.24.0"},{"status":"affected","version":"1.24.1"},{"status":"affected","version":"1.24.2"},{"status":"affected","version":"1.24.3"},{"status":"affected","version":"1.24.4"},{"status":"affected","version":"1.26.0"},{"status":"affected","version":"1.24.5"},{"status":"affected","version":"1.26.1"},{"status":"affected","version":"1.27.0"},{"status":"affected","version":"1.15.0"},{"status":"affected","version":"1.17.0"},{"status":"affected","version":"1.17.1"},{"status":"affected","version":"1.17.2"},{"status":"affected","version":"1.19.0"},{"status":"affected","version":"1.20.1"},{"status":"affected","version":"1.20.2"},{"status":"affected","version":"1.20.3"},{"status":"affected","version":"1.20.4"},{"status":"affected","version":"1.20.5"},{"status":"affected","version":"1.20.6"},{"status":"affected","version":"1.23.0"},{"status":"affected","version":"1.23.1"},{"status":"affected","version":"1.20.7"},{"status":"affected","version":"1.20.8"},{"status":"affected","version":"1.25.0"},{"status":"affected","version":"1.25.1"},{"status":"affected","version":"1.25.2"},{"status":"affected","version":"1.27.1"},{"status":"affected","version":"1.27.2"},{"status":"affected","version":"7.3.13"},{"status":"affected","version":"7.3.15"},{"status":"affected","version":"7.4.1"},{"status":"affected","version":"7.4.1.20425"},{"status":"affected","version":"7.4.1.20439"},{"status":"affected","version":"7.4.3"},{"status":"affected","version":"7.4.3.20679"},{"status":"affected","version":"7.4.5"},{"status":"affected","version":"7.5.1.20813"},{"status":"affected","version":"7.5.1.20833"},{"status":"affected","version":"7.5.3"},{"status":"affected","version":"7.5.5"},{"status":"affected","version":"8.0.1.21160"},{"status":"affected","version":"8.0.1.21164"},{"status":"affected","version":"7.5.7"},{"status":"affected","version":"7.5.9"},{"status":"affected","version":"7.5.11"},{"status":"affected","version":"8.1.7.21585"},{"status":"affected","version":"7.5.13.21586"},{"status":"affected","version":"7.5.13.21598"},{"status":"affected","version":"8.2.1.21612"},{"status":"affected","version":"8.2.1.21650"},{"status":"affected","version":"7.5.15.21611"},{"status":"affected","version":"7.5.17.21680"},{"status":"affected","version":"8.2.3.30119"},{"status":"affected","version":"8.2.4.30130"},{"status":"affected","version":"8.4.0"},{"status":"affected","version":"7.5.19"},{"status":"affected","version":"8.4.1.30298"},{"status":"affected","version":"8.4.2.30317"},{"status":"affected","version":"8.4.1.30307"},{"status":"affected","version":"7.5.20"},{"status":"affected","version":"8.4.3"},{"status":"affected","version":"8.4.4.30419"},{"status":"affected","version":"8.4.4.30467"},{"status":"affected","version":"7.5.21.21732"},{"status":"affected","version":"8.4.5.30483"}]}],"descriptions":[{"lang":"en","value":"A vulnerability in the Mach-O file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device.\r\n\r\nThis vulnerability is due to improper boundary checks for content in Mach-O files during scanning, which may result in an out-of-bounds buffer read. An attacker could exploit this vulnerability by submitting a crafted Mach-O file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software."}],"exploits":[{"lang":"en","value":"The Cisco PSIRT is aware that proof-of-concept exploit code is available for the vulnerabilities that are described in CVE-2026-20337 and CVE-2026-20338.\r\n\r\nThe Cisco PSIRT is not aware of proof-of-concept exploit code for any of the other vulnerabilities that are described in this advisory.\r\nThe Cisco PSIRT is not aware of any malicious use of the vulnerabilities that are described in this advisory."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"cvssV3_1"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-125","description":"Out-of-bounds Read","lang":"en","type":"cwe"}]}],"providerMetadata":{"dateUpdated":"2026-08-07T16:42:29.284Z","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","shortName":"cisco"},"references":[{"name":"cisco-sa-clamav-WuuvVd26","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-WuuvVd26"}],"source":{"advisory":"cisco-sa-clamav-WuuvVd26","defects":["CSCwv55051"],"discovery":"EXTERNAL"},"title":"ClamAV Mach-O File Format Processing Memory Corruption Vulnerability"}},"cveMetadata":{"assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","assignerShortName":"cisco","cveId":"CVE-2026-20347","datePublished":"2026-08-07T16:42:29.284Z","dateReserved":"2025-10-08T11:59:15.413Z","dateUpdated":"2026-08-07T21:10:28.338Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-07 17:17:03","lastModifiedDate":"2026-08-07 22:16:58","problem_types":["CWE-125","CWE-125 Out-of-bounds Read"],"metrics":{"cvssMetricV31":[{"source":"psirt@cisco.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-07T21:00:30.257807Z","id":"CVE-2026-20347","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"20347","Ordinal":"1","Title":"ClamAV Mach-O File Format Processing Memory Corruption Vulnerabi","CVE":"CVE-2026-20347","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"20347","Ordinal":"1","NoteData":"A vulnerability in the Mach-O file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of memory corruption on an affected device.\r\n\r\nThis vulnerability is due to improper boundary checks for content in Mach-O files during scanning, which may result in an out-of-bounds buffer read. An attacker could exploit this vulnerability by submitting a crafted Mach-O file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.","Type":"Description","Title":"ClamAV Mach-O File Format Processing Memory Corruption Vulnerabi"}]}}}