{"api_version":"1","generated_at":"2026-08-01T14:50:27+00:00","cve":"CVE-2026-64771","urls":{"html":"https://cve.report/CVE-2026-64771","api":"https://cve.report/api/cve/CVE-2026-64771.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64771","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64771"},"summary":{"title":"CVE-2026-64771","description":"A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.","state":"PUBLISHED","assigner":"apple","published_at":"2026-07-27 21:17:15","updated_at":"2026-07-28 18:39:12"},"problem_types":["CWE-119","A remote attacker may be able to cause unexpected application termination or heap corruption","CWE-119 CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}}],"references":[{"url":"https://support.apple.com/en-us/128066","name":"https://support.apple.com/en-us/128066","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/128070","name":"https://support.apple.com/en-us/128070","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/128069","name":"https://support.apple.com/en-us/128069","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/128071","name":"https://support.apple.com/en-us/128071","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/128067","name":"https://support.apple.com/en-us/128067","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64771","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64771","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Apple","product":"iOS and iPadOS","version":"affected 26.6 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"macOS","version":"affected 15.7.8 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"macOS","version":"affected 26.6 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"tvOS","version":"affected 26.6 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"visionOS","version":"affected 26.6 custom","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"64771","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"apple","cpe5":"ipados","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"64771","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"apple","cpe5":"iphone_os","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"64771","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"apple","cpe5":"macos","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64771","cve":"CVE-2026-64771","epss":"0.004500000","percentile":"0.368300000","score_date":"2026-07-29","updated_at":"2026-07-30 00:09:13"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-64771","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-07-28T14:00:07.161761Z","version":"2.0.3"},"type":"ssvc"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-119","description":"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-07-28T14:00:16.924Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"iOS and iPadOS","vendor":"Apple","versions":[{"lessThan":"26.6","status":"affected","version":"0","versionType":"custom"}]},{"product":"macOS","vendor":"Apple","versions":[{"lessThan":"15.7.8","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.6","status":"affected","version":"0","versionType":"custom"}]},{"product":"tvOS","vendor":"Apple","versions":[{"lessThan":"26.6","status":"affected","version":"0","versionType":"custom"}]},{"product":"visionOS","vendor":"Apple","versions":[{"lessThan":"26.6","status":"affected","version":"0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption."}],"problemTypes":[{"descriptions":[{"description":"A remote attacker may be able to cause unexpected application termination or heap corruption","lang":"en"}]}],"providerMetadata":{"dateUpdated":"2026-07-27T20:13:54.442Z","orgId":"286789f9-fbc2-4510-9f9a-43facdede74c","shortName":"apple"},"references":[{"url":"https://support.apple.com/en-us/128066"},{"url":"https://support.apple.com/en-us/128067"},{"url":"https://support.apple.com/en-us/128069"},{"url":"https://support.apple.com/en-us/128070"},{"url":"https://support.apple.com/en-us/128071"}]}},"cveMetadata":{"assignerOrgId":"286789f9-fbc2-4510-9f9a-43facdede74c","assignerShortName":"apple","cveId":"CVE-2026-64771","datePublished":"2026-07-27T20:13:54.442Z","dateReserved":"2026-07-20T18:10:53.025Z","dateUpdated":"2026-07-28T14:00:16.924Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-27 21:17:15","lastModifiedDate":"2026-07-28 18:39:12","problem_types":["CWE-119","A remote attacker may be able to cause unexpected application termination or heap corruption","CWE-119 CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-28T14:00:07.161761Z","id":"CVE-2026-64771","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*","versionEndExcluding":"26.6","matchCriteriaId":"AB0E13A1-17E9-4198-A359-304F8145F34F"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*","versionEndExcluding":"26.6","matchCriteriaId":"622D61A7-C893-4550-800A-8CEDE14F3033"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"15.0","versionEndExcluding":"15.7.8","matchCriteriaId":"B3E01512-81BB-4C92-B0A5-C07F1C1A432E"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"26.0","versionEndExcluding":"26.6","matchCriteriaId":"8D3D83F1-07DF-47C2-9F3B-0BC5A1434606"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*","versionEndExcluding":"26.6","matchCriteriaId":"D461E49C-A6FA-4AFD-B557-FB066243A708"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*","versionEndExcluding":"26.6","matchCriteriaId":"927CD91A-3CC7-42CE-BD20-CD6D7C9B4984"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64771","Ordinal":"1","Title":"CVE-2026-64771","CVE":"CVE-2026-64771","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64771","Ordinal":"1","NoteData":"A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 26.6 and iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, tvOS 26.6, visionOS 26.6. A remote attacker may be able to cause unexpected application termination or heap corruption.","Type":"Description","Title":"CVE-2026-64771"}]}}}