{"id":"CVE-2025-43529","published":"2025-12-17T21:16:11Z","modified":"2026-10-07T11:10:00Z","title":"Apple Multiple Products Use-After-Free WebKit Vulnerability","vendor":"Apple","product":"Multiple Products","tier":"core","eol":null,"description":{"text":"A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.","provenance":"source","from":"NVD"},"summary":{"text":"A use-after-free memory safety flaw in the WebKit component shared across multiple Apple products, including Safari, iOS, iPadOS, macOS, tvOS, visionOS and watchOS. An attacker who can get a user to open maliciously crafted web content can achieve arbitrary code execution, and no authentication is required, though user interaction is needed.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:13:04Z"},"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":0.2565,"percentile":0.97958,"date":"2026-10-29","provenance":"source"},"kev":{"dateAdded":"2025-12-15","dueDate":"2026-01-05","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://support.apple.com/en-us/125884 ; https://support.apple.com/en-us/125892 ; https://support.apple.com/en-us/125885 ; https://support.apple.com/en-us/125886 ; https://support.apple.com/en-us/125889 ; https://nvd.nist.gov/vuln/detail/CVE-2025-43529","provenance":"source"},"vulncheckKev":{"dateAdded":"2025-12-12","exploitedFirstSeen":"2025-12-12","ransomware":false,"evidence":[{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2025-12-12"},{"url":"https://support.apple.com/en-us/125885","date":"2025-12-12"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2025-12-15"},{"url":"https://www.recordedfuture.com/blog/december-2025-cve-landscape","date":"2026-01-13"},{"url":"https://www.loginsoft.com/reports/annually/vulnerability-intelligence-report-2025","date":"2026-01-20"},{"url":"https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/","date":"2026-03-18"},{"url":"https://iverify.io/blog/darksword-ios-exploit-kit-explained","date":"2026-03-18"},{"url":"https://8ksec.io/how-browser-exploits-work-darksword-ios-cve-2025-43529/","date":"2026-04-19"},{"url":"https://www.recordedfuture.com/blog/august-2026-cve-landscape","date":"2026-09-08"},{"url":"https://www.trellix.com/advanced-research-center/threat-reports/secondsight-threat-hunting-report-september-2026/","date":"2026-09-08"}],"evidenceTotal":11,"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":"Adversary Unmasked APT Profile - Star Blizzard","url":"https://otx.alienvault.com/pulse/6ae244fe073f118d830cf4be","created":"2026-10-28"},{"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":"WebKit Memory Fallback Loop","url":"https://otx.alienvault.com/pulse/6ada898c800d47e6d3e09041","created":"2026-10-22"},{"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"}],"provenance":"machine"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"references":[{"url":"https://support.apple.com/en-us/125884","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125885","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125886","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125889","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125890","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125891","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/125892","tags":["Release Notes","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43529","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: Malicious web content triggers exploitation, drive-by style","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"Processing maliciously crafted web content may lead to arbitrary code execution","start":220,"end":299}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Arbitrary code execution is the direct impact","mappingType":"primary_impact","evidence":[{"from":"description","quote":"may lead to arbitrary code execution","start":263,"end":299}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2025-203963","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-203963","exploited":true,"exploitedSince":"2025-12-15","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":7,"skipped":0,"earliest":"2026-01-05","earliestUrl":"https://github.com/jir4vv1t/CVE-2025-43529","repos":[{"name":"0xjohnnydev/WebKit-UAF-ANGLE-OOB-Analysis","url":"https://github.com/0xjohnnydev/WebKit-UAF-ANGLE-OOB-Analysis","stars":114,"created":"2026-01-13"},{"name":"GenericCoding/pois0nSword","url":"https://github.com/GenericCoding/pois0nSword","stars":109,"created":"2026-06-11"},{"name":"jir4vv1t/CVE-2025-43529","url":"https://github.com/jir4vv1t/CVE-2025-43529","stars":87,"created":"2026-01-05"},{"name":"bjrjk/CVE-2025-43529","url":"https://github.com/bjrjk/CVE-2025-43529","stars":18,"created":"2026-02-01"},{"name":"SimoesCTT/Convergent-Time-Theory-Enhanced-iOS-Safari-RCE-CVE-2025-43529-","url":"https://github.com/SimoesCTT/Convergent-Time-Theory-Enhanced-iOS-Safari-RCE-CVE-2025-43529-","stars":1,"created":"2026-01-28"}]},"first":{"date":"2026-01-05","source":"PoC-in-GitHub","url":"https://github.com/jir4vv1t/CVE-2025-43529"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1189"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2025-12-12","kind":"exploited-reported","label":"Exploitation 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KEV"},{"name":"Recent KEV listing","points":5.0,"detail":"added 322 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.59,"detail":"percentile 0.9796"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"7 PoC-in-GitHub repos"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.16,"detail":"base score 8.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-apple-ios-macos-cwe-416"}}