{"api_version":"1","generated_at":"2026-07-24T18:47:46+00:00","cve":"CVE-2025-43494","urls":{"html":"https://cve.report/CVE-2025-43494","api":"https://cve.report/api/cve/CVE-2025-43494.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-43494","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-43494"},"summary":{"title":"CVE-2025-43494","description":"A mail header parsing issue was addressed with improved checks. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. An attacker may be able to cause a persistent denial-of-service.","state":"PUBLISHED","assigner":"apple","published_at":"2025-12-12 21:15:55","updated_at":"2026-04-02 19:20:53"},"problem_types":["CWE-20","An attacker may be able to cause a persistent denial-of-service","CWE-20 CWE-20 Improper Input Validation"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","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"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","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"}}],"references":[{"url":"https://support.apple.com/en-us/125634","name":"https://support.apple.com/en-us/125634","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/125639","name":"https://support.apple.com/en-us/125639","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/125636","name":"https://support.apple.com/en-us/125636","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/125632","name":"https://support.apple.com/en-us/125632","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/125633","name":"https://support.apple.com/en-us/125633","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/125638","name":"https://support.apple.com/en-us/125638","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://support.apple.com/en-us/125635","name":"https://support.apple.com/en-us/125635","refsource":"product-security@apple.com","tags":["Release Notes","Vendor Advisory"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-43494","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-43494","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Apple","product":"iOS and iPadOS","version":"affected 18.7.2 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"iOS and iPadOS","version":"affected 26.1 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"macOS","version":"affected 14.8.2 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"macOS","version":"affected 15.7.2 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"macOS","version":"affected 26.1 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"visionOS","version":"affected 26.1 custom","platforms":[]},{"source":"CNA","vendor":"Apple","product":"watchOS","version":"affected 26.1 custom","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2025","cve_id":"43494","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"apple","cpe5":"ipados","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2025","cve_id":"43494","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"apple","cpe5":"ipados","cpe6":"26.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2025","cve_id":"43494","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":"2025","cve_id":"43494","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"apple","cpe5":"iphone_os","cpe6":"26.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2025","cve_id":"43494","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":"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"}},{"other":{"content":{"id":"CVE-2025-43494","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2025-12-16T04:56:01.440750Z","version":"2.0.3"},"type":"ssvc"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-02-26T16:07:41.054Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"iOS and iPadOS","vendor":"Apple","versions":[{"lessThan":"18.7.2","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.1","status":"affected","version":"0","versionType":"custom"}]},{"product":"macOS","vendor":"Apple","versions":[{"lessThan":"14.8.2","status":"affected","version":"0","versionType":"custom"},{"lessThan":"15.7.2","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.1","status":"affected","version":"0","versionType":"custom"}]},{"product":"visionOS","vendor":"Apple","versions":[{"lessThan":"26.1","status":"affected","version":"0","versionType":"custom"}]},{"product":"watchOS","vendor":"Apple","versions":[{"lessThan":"26.1","status":"affected","version":"0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"A mail header parsing issue was addressed with improved checks. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. An attacker may be able to cause a persistent denial-of-service."}],"problemTypes":[{"descriptions":[{"description":"An attacker may be able to cause a persistent denial-of-service","lang":"en"}]}],"providerMetadata":{"dateUpdated":"2026-04-02T18:21:24.617Z","orgId":"286789f9-fbc2-4510-9f9a-43facdede74c","shortName":"apple"},"references":[{"url":"https://support.apple.com/en-us/125632"},{"url":"https://support.apple.com/en-us/125633"},{"url":"https://support.apple.com/en-us/125634"},{"url":"https://support.apple.com/en-us/125635"},{"url":"https://support.apple.com/en-us/125636"},{"url":"https://support.apple.com/en-us/125638"},{"url":"https://support.apple.com/en-us/125639"}]}},"cveMetadata":{"assignerOrgId":"286789f9-fbc2-4510-9f9a-43facdede74c","assignerShortName":"apple","cveId":"CVE-2025-43494","datePublished":"2025-12-12T20:56:47.563Z","dateReserved":"2025-04-16T15:27:21.191Z","dateUpdated":"2026-04-02T18:21:24.617Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-12 21:15:55","lastModifiedDate":"2026-04-02 19:20:53","problem_types":["CWE-20","An attacker may be able to cause a persistent denial-of-service","CWE-20 CWE-20 Improper Input Validation"],"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: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}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*","versionEndExcluding":"18.7.2","matchCriteriaId":"819E8F86-A336-49A2-853F-249459279A59"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:ipados:26.0:*:*:*:*:*:*:*","matchCriteriaId":"4173F942-2CF6-447E-A942-948F6EF6CE77"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*","versionEndExcluding":"18.7.2","matchCriteriaId":"7B98B4A6-EFB0-4651-BF56-06917E7CEC85"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:iphone_os:26.0:*:*:*:*:*:*:*","matchCriteriaId":"E29A276A-7091-42B2-B893-6A5801A0716E"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"14.0","versionEndExcluding":"14.8.2","matchCriteriaId":"9827CBDC-8C03-46BA-B534-8533F0975804"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*","versionStartIncluding":"15.0","versionEndExcluding":"15.7.2","matchCriteriaId":"4BE8199E-63D1-496C-B107-52853CFC2311"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:macos:26.0:*:*:*:*:*:*:*","matchCriteriaId":"551159EE-8311-4A13-802D-85871DAB5E77"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*","versionEndExcluding":"26.1","matchCriteriaId":"7DFD3616-65CA-4E5C-849C-3C20ACBCB610"},{"vulnerable":true,"criteria":"cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*","versionEndExcluding":"26.1","matchCriteriaId":"9F9D7F76-13FB-407C-94E5-221B93021568"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"43494","Ordinal":"1","Title":"CVE-2025-43494","CVE":"CVE-2025-43494","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"43494","Ordinal":"1","NoteData":"A mail header parsing issue was addressed with improved checks. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. An attacker may be able to cause a persistent denial-of-service.","Type":"Description","Title":"CVE-2025-43494"}]}}}