{"id":"CVE-2023-42917","published":"2023-11-30T23:15:07Z","modified":"2026-06-17T06:24:49Z","title":"Apple Multiple Products WebKit Memory Corruption Vulnerability","vendor":"Apple","product":"Multiple Products","tier":"core","eol":null,"description":{"text":"A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is a memory corruption vulnerability in WebKit, a component shipped across multiple Apple products, which was addressed with improved locking. An attacker who can get a user to process crafted web content, such as by visiting a malicious page with no prior authentication, could execute arbitrary code, and exploitation requires that the user take an action to trigger the content.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:05Z"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.09295,"percentile":0.95356,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2023-12-04","dueDate":"2023-12-25","ransomware":false,"requiredAction":"Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.","notes":"https://support.apple.com/en-us/HT214031, https://support.apple.com/en-us/HT214032, https://support.apple.com/en-us/HT214033 ;  https://nvd.nist.gov/vuln/detail/CVE-2023-42917","provenance":"source"},"vulncheckKev":{"dateAdded":"2023-11-30","exploitedFirstSeen":"2023-11-30","ransomware":false,"evidence":[{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2023-11-30"},{"url":"https://support.apple.com/en-us/HT214031","date":"2023-11-30"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2023-12-04"},{"url":"https://isc.sans.edu/diary/Apple%20Updates%20Everything%20-%20New%200%20Day%20in%20WebKit/30578","date":"2024-01-22"},{"url":"https://ti.qianxin.com/uploads/2024/02/02/dcc93e586f9028c68e7ab34c3326ff31.pdf","date":"2024-02-02"},{"url":"https://storage.googleapis.com/gweb-uniblog-publish-prod/documents/Buying_Spying_-_Insights_into_Commercial_Surveillance_Vendors.pdf","date":"2024-02-06"}],"evidenceTotal":6,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 30, 2026","url":"https://otx.alienvault.com/pulse/6ae35d889ea92b4ce19c2680","created":"2026-10-29"},{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"references":[{"url":"http://seclists.org/fulldisclosure/2023/Dec/12","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/13","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/3","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/4","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/5","tags":["Mailing List","Third Party 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Advisory"]},{"url":"https://support.apple.com/kb/HT214033","tags":["Vendor Advisory"]},{"url":"https://support.apple.com/kb/HT214034","tags":["Vendor Advisory"]},{"url":"https://support.apple.com/kb/HT214062","tags":["Vendor Advisory"]},{"url":"https://www.debian.org/security/2023/dsa-5575","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/12","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/13","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/3","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/4","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/5","tags":["Mailing List","Third Party Advisory"]},{"url":"http://seclists.org/fulldisclosure/2023/Dec/8","tags":["Mailing List","Third Party 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Advisory"]},{"url":"https://support.apple.com/kb/HT214034","tags":["Vendor Advisory"]},{"url":"https://support.apple.com/kb/HT214062","tags":["Vendor Advisory"]},{"url":"https://www.debian.org/security/2023/dsa-5575","tags":["Mailing List","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-42917","tags":["US Government Resource"]}],"techniques":[{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: web content processing enables drive-by exploitation","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Processing web content may lead to arbitrary code execution","start":160,"end":219}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting 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