{"api_version":"1","generated_at":"2026-04-22T17:46:56+00:00","cve":"CVE-2026-20636","urls":{"html":"https://cve.report/CVE-2026-20636","api":"https://cve.report/api/cve/CVE-2026-20636.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-20636","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-20636"},"summary":{"title":"CVE-2026-20636","description":"The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.","state":"PUBLISHED","assigner":"apple","published_at":"2026-02-11 23:16:06","updated_at":"2026-04-02 19:21:14"},"problem_types":["CWE-119","Processing maliciously crafted web content may lead to an unexpected process crash","CWE-119 CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","score":"6.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://support.apple.com/en-us/126354","name":"https://support.apple.com/en-us/126354","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/126346","name":"https://support.apple.com/en-us/126346","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/126348","name":"https://support.apple.com/en-us/126348","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/126353","name":"https://support.apple.com/en-us/126353","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-20636","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20636","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Apple","product":"Safari","version":"affected 26.3 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"iOS and iPadOS","version":"affected 26.3 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"macOS","version":"affected 26.3 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"visionOS","version":"affected 26.3 custom","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"20636","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":"20636","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":"20636","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"apple","cpe5":"macos","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"20636","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"apple","cpe5":"safari","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"20636","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"apple","cpe5":"visionos","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"20636","cve":"CVE-2026-20636","epss":"0.000410000","percentile":"0.125490000","score_date":"2026-04-07","updated_at":"2026-04-08 00:03:40"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-20636","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-02-13T20:05:15.376828Z","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":"2026-02-13T20:05:45.701Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"Safari","vendor":"Apple","versions":[{"lessThan":"26.3","status":"affected","version":"0","versionType":"custom"}]},{"product":"iOS and iPadOS","vendor":"Apple","versions":[{"lessThan":"26.3","status":"affected","version":"0","versionType":"custom"}]},{"product":"macOS","vendor":"Apple","versions":[{"lessThan":"26.3","status":"affected","version":"0","versionType":"custom"}]},{"product":"visionOS","vendor":"Apple","versions":[{"lessThan":"26.3","status":"affected","version":"0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash."}],"problemTypes":[{"descriptions":[{"description":"Processing maliciously crafted web content may lead to an unexpected process crash","lang":"en"}]}],"providerMetadata":{"dateUpdated":"2026-04-02T18:13:24.088Z","orgId":"286789f9-fbc2-4510-9f9a-43facdede74c","shortName":"apple"},"references":[{"url":"https://support.apple.com/en-us/126346"},{"url":"https://support.apple.com/en-us/126348"},{"url":"https://support.apple.com/en-us/126353"},{"url":"https://support.apple.com/en-us/126354"}]}},"cveMetadata":{"assignerOrgId":"286789f9-fbc2-4510-9f9a-43facdede74c","assignerShortName":"apple","cveId":"CVE-2026-20636","datePublished":"2026-02-11T22:58:15.328Z","dateReserved":"2025-11-11T14:43:07.861Z","dateUpdated":"2026-04-02T18:13:24.088Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-02-11 23:16:06","lastModifiedDate":"2026-04-02 19:21:14","problem_types":["CWE-119","Processing maliciously crafted web content may lead to an unexpected process crash","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:R/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*","versionEndExcluding":"26.3","matchCriteriaId":"13054182-3C0A-47D3-AABE-2B248BA17814"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*","versionEndExcluding":"26.3","matchCriteriaId":"73ED2212-C513-4BE8-8EDB-40DF4323558E"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*","versionEndExcluding":"26.3","matchCriteriaId":"DEC63AFD-9C97-45CD-80CF-CC60DF064838"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionEndExcluding":"26.3","matchCriteriaId":"E1EEEE88-5ADA-4C55-9C7C-397E904408DD"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*","versionEndExcluding":"26.3","matchCriteriaId":"388EDB3F-A14E-4922-B88A-F1CB6DE50A2A"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"20636","Ordinal":"1","Title":"CVE-2026-20636","CVE":"CVE-2026-20636","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"20636","Ordinal":"1","NoteData":"The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. Processing maliciously crafted web content may lead to an unexpected process crash.","Type":"Description","Title":"CVE-2026-20636"}]}}}