{"api_version":"1","generated_at":"2026-07-07T14:19:22+00:00","cve":"CVE-2026-20217","urls":{"html":"https://cve.report/CVE-2026-20217","api":"https://cve.report/api/cve/CVE-2026-20217.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-20217","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-20217"},"summary":{"title":"ClamAV PESpin File Format Processing Out-of-Bounds Memory Corruption Vulnerability","description":"A vulnerability in the PESpin file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.\r\n\r\nThis vulnerability is due to improper boundary checks for content in PESpin files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains PESpin content to be scanned by ClamAV on an affected device. 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vulnerability in the PESpin file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.\r\n\r\nThis vulnerability is due to improper boundary checks for content in PESpin files during scanning, which may result in an out-of-bounds buffer write. An attacker could exploit this vulnerability by submitting a crafted file that contains PESpin content 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 not aware of any public announcements or 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-120","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"cwe"}]}],"providerMetadata":{"dateUpdated":"2026-07-01T16:28:03.720Z","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","shortName":"cisco"},"references":[{"name":"cisco-sa-clamav-88cFYyxR","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-88cFYyxR"}],"source":{"advisory":"cisco-sa-clamav-88cFYyxR","defects":["CSCwt57454"],"discovery":"EXTERNAL"},"title":"ClamAV PESpin File Format Processing Out-of-Bounds Memory Corruption Vulnerability"}},"cveMetadata":{"assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","assignerShortName":"cisco","cveId":"CVE-2026-20217","datePublished":"2026-07-01T16:28:03.720Z","dateReserved":"2025-10-08T11:59:15.398Z","dateUpdated":"2026-07-01T17:25:08.697Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-01 17:16:30","lastModifiedDate":"2026-07-01 18:16:31","problem_types":["CWE-120","CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')"],"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":"2026-07-01T17:17:51.378262Z","id":"CVE-2026-20217","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"20217","Ordinal":"1","Title":"ClamAV PESpin File Format Processing Out-of-Bounds Memory Corrup","CVE":"CVE-2026-20217","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"20217","Ordinal":"1","NoteData":"A vulnerability in the PESpin file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition, or possibly other expanded impacts, resulting from memory corruption on an affected device.\r\n\r\nThis vulnerability is due to improper boundary checks for content in PESpin files during scanning, which may result in an out-of-bounds buffer write. 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