{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43666", "assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c", "state": "PUBLISHED", "assignerShortName": "apple", "dateReserved": "2026-05-01T22:46:21.640Z", "datePublished": "2026-05-11T20:07:37.808Z", "dateUpdated": "2026-05-12T17:17:23.910Z"}, "containers": {"cna": {"problemTypes": [{"descriptions": [{"lang": "en", "description": "An attacker on the local network may be able to cause a denial-of-service"}]}], "affected": [{"vendor": "Apple", "product": "iOS and iPadOS", "versions": [{"version": "0", "status": "affected", "lessThan": "18.7.9", "versionType": "custom"}, {"version": "0", "status": "affected", "lessThan": "26.5", "versionType": "custom"}]}, {"vendor": "Apple", "product": "macOS", "versions": [{"version": "0", "status": "affected", "lessThan": "14.8.7", "versionType": "custom"}, {"version": "0", "status": "affected", "lessThan": "15.7.7", "versionType": "custom"}, {"version": "0", "status": "affected", "lessThan": "26.5", "versionType": "custom"}]}, {"vendor": "Apple", "product": "tvOS", "versions": [{"version": "0", "status": "affected", "lessThan": "26.5", "versionType": "custom"}]}, {"vendor": "Apple", "product": "visionOS", "versions": [{"version": "0", "status": "affected", "lessThan": "26.5", "versionType": "custom"}]}, {"vendor": "Apple", "product": "watchOS", "versions": [{"version": "0", "status": "affected", "lessThan": "26.5", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An attacker on the local network may be able to cause a denial-of-service."}], "references": [{"url": "https://support.apple.com/en-us/127110"}, {"url": "https://support.apple.com/en-us/127111"}, {"url": "https://support.apple.com/en-us/127115"}, {"url": "https://support.apple.com/en-us/127116"}, {"url": "https://support.apple.com/en-us/127117"}, {"url": "https://support.apple.com/en-us/127118"}, {"url": "https://support.apple.com/en-us/127119"}, {"url": "https://support.apple.com/en-us/127120"}], "providerMetadata": {"orgId": "286789f9-fbc2-4510-9f9a-43facdede74c", "shortName": "apple", "dateUpdated": "2026-05-11T20:07:37.808Z"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-787", "lang": "en", "description": "CWE-787 Out-of-bounds Write"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.2, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-05-12T17:16:38.990135Z", "id": "CVE-2026-43666", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-12T17:17:23.910Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An attacker on the local network may be able to cause a denial-of-service."}], "id": "CVE-2026-43666", "lastModified": "2026-05-12T18:17:27.877", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-05-11T21:19:01.920", "references": [{"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/127110"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/127111"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/127115"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/127116"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/127117"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/127118"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/127119"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/127120"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,18.7.9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "iOS and iPadOS", "source": "cna", "vendor": "Apple"}, "product": "ios_and_ipados", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,14.8.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,15.7.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "macOS", "source": "cna", "vendor": "Apple"}, "product": "macos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "tvOS", "source": "cna", "vendor": "Apple"}, "product": "tvos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "visionOS", "source": "cna", "vendor": "Apple"}, "product": "visionos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "watchOS", "source": "cna", "vendor": "Apple"}, "product": "watchos", "vendor": "apple"}], "created": "2026-05-11T23:30:02.962838+00:00", "title": "Apple OS Local Network DoS via Out\u2011of\u2011Bounds Write", "updated": "2026-05-12T01:00:04.372872+00:00", "vendors": ["apple", "apple$PRODUCT$ios_and_ipados", "apple$PRODUCT$macos", "apple$PRODUCT$tvos", "apple$PRODUCT$visionos", "apple$PRODUCT$watchos"], "weaknesses": ["CWE-119", "CWE-787"]}