{"api_version":"1","generated_at":"2026-07-23T15:06:01+00:00","cve":"CVE-2026-20621","urls":{"html":"https://cve.report/CVE-2026-20621","api":"https://cve.report/api/cve/CVE-2026-20621.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-20621","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-20621"},"summary":{"title":"CVE-2026-20621","description":"The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.","state":"PUBLISHED","assigner":"apple","published_at":"2026-02-11 23:16:05","updated_at":"2026-04-02 19:21:11"},"problem_types":["NVD-CWE-noinfo","CWE-119","An app may be able to cause unexpected system termination or corrupt kernel memory","CWE-119 CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}},{"version":"3.1","source":"ADP","type":"DECLARED","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"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/126350","name":"https://support.apple.com/en-us/126350","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/126349","name":"https://support.apple.com/en-us/126349","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://support.apple.com/en-us/126347","name":"https://support.apple.com/en-us/126347","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-20621","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20621","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Apple","product":"iOS and iPadOS","version":"affected 18.7.5 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"iOS and iPadOS","version":"affected 26.3 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"macOS","version":"affected 14.8.4 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"macOS","version":"affected 15.7.4 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":"20621","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":"20621","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":"20621","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":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-20621","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-02-18T15:06:03.341586Z","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":"2026-02-18T15:06:07.326Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"iOS and iPadOS","vendor":"Apple","versions":[{"lessThan":"18.7.5","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.3","status":"affected","version":"0","versionType":"custom"}]},{"product":"macOS","vendor":"Apple","versions":[{"lessThan":"14.8.4","status":"affected","version":"0","versionType":"custom"},{"lessThan":"15.7.4","status":"affected","version":"0","versionType":"custom"},{"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 iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory."}],"problemTypes":[{"descriptions":[{"description":"An app may be able to cause unexpected system termination or corrupt kernel memory","lang":"en"}]}],"providerMetadata":{"dateUpdated":"2026-04-02T18:16:19.215Z","orgId":"286789f9-fbc2-4510-9f9a-43facdede74c","shortName":"apple"},"references":[{"url":"https://support.apple.com/en-us/126346"},{"url":"https://support.apple.com/en-us/126347"},{"url":"https://support.apple.com/en-us/126348"},{"url":"https://support.apple.com/en-us/126349"},{"url":"https://support.apple.com/en-us/126350"},{"url":"https://support.apple.com/en-us/126353"}]}},"cveMetadata":{"assignerOrgId":"286789f9-fbc2-4510-9f9a-43facdede74c","assignerShortName":"apple","cveId":"CVE-2026-20621","datePublished":"2026-02-11T22:58:26.506Z","dateReserved":"2025-11-11T14:43:07.859Z","dateUpdated":"2026-04-02T18:16:19.215Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-02-11 23:16:05","lastModifiedDate":"2026-04-02 19:21:11","problem_types":["NVD-CWE-noinfo","CWE-119","An app may be able to cause unexpected system termination or corrupt kernel memory","CWE-119 CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"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":"14.8.4","matchCriteriaId":"8D9F0DB6-C9A6-47C1-B131-0284A3989EF4"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"15.0","versionEndExcluding":"15.7.4","matchCriteriaId":"A5F7A1AF-3DD7-4FA1-BF78-4855F83BB463"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"26.0","versionEndExcluding":"26.3","matchCriteriaId":"0488A377-7971-4703-8823-05BF1E23CF48"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"20621","Ordinal":"1","Title":"CVE-2026-20621","CVE":"CVE-2026-20621","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"20621","Ordinal":"1","NoteData":"The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, visionOS 26.3. An app may be able to cause unexpected system termination or corrupt kernel memory.","Type":"Description","Title":"CVE-2026-20621"}]}}}