{"id":"CVE-2026-20700","published":"2026-02-11T23:16:10Z","modified":"2026-06-17T10:17:43Z","title":"Apple Multiple Buffer Overflow Vulnerability","vendor":"Apple","product":"Multiple Products","tier":"core","eol":null,"description":{"text":"A memory corruption issue was addressed with improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker with memory write capability may be able to execute arbitrary code. 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 and CVE-2025-43529 were also issued in response to this report.","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is a memory corruption issue, classed as an improper restriction of operations within the bounds of a memory buffer, affecting multiple Apple products including iOS, iPadOS, macOS Tahoe, tvOS, visionOS and watchOS, with fixes in version 26.3 of those platforms. An attacker who already has memory write capability on an affected device may be able to execute arbitrary code.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:11:14Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.01679,"percentile":0.7689,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2026-02-12","dueDate":"2026-03-05","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/126346 ; https://support.apple.com/en-us/126348 ; https://support.apple.com/en-us/126351 ; https://support.apple.com/en-us/126352 ; https://support.apple.com/en-us/126353 ; https://nvd.nist.gov/vuln/detail/CVE-2026-20700","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-02-11","exploitedFirstSeen":"2026-02-11","ransomware":false,"evidence":[{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2026-02-11"},{"url":"https://support.apple.com/en-us/126346","date":"2026-02-11"},{"url":"https://support.apple.com/en-us/126348","date":"2026-02-11"},{"url":"https://support.apple.com/en-us/126351","date":"2026-02-11"},{"url":"https://support.apple.com/en-us/126352","date":"2026-02-11"},{"url":"https://support.apple.com/en-us/126353","date":"2026-02-11"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-02-12"},{"url":"https://www.recordedfuture.com/blog/february-2026-cve-landscape","date":"2026-03-12"},{"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"}],"evidenceTotal":14,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 31, 2026","url":"https://otx.alienvault.com/pulse/6ae4aefab0c2191cecd41862","created":"2026-10-30"},{"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":"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-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"references":[{"url":"https://support.apple.com/en-us/126346","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/126348","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/126351","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/126352","tags":["Release Notes","Vendor Advisory"]},{"url":"https://support.apple.com/en-us/126353","tags":["Release Notes","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20700","tags":["US Government Resource"]}],"techniques":[{"id":"T1068","name":"Exploitation for Privilege Escalation","tactics":["privilege-escalation"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Requires existing memory write; local privilege escalation","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"An attacker with memory write capability may be able to execute arbitrary code","start":179,"end":257}],"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 after successful exploitation","mappingType":"primary_impact","evidence":[{"from":"description","quote":"may be able to execute arbitrary code","start":220,"end":257}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-6189","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-6189","exploited":true,"exploitedSince":"2026-02-12","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":1,"skipped":1,"earliest":"2026-05-23","earliestUrl":"https://github.com/R3n3r0/CVE-2026-20700","repos":[{"name":"R3n3r0/CVE-2026-20700","url":"https://github.com/R3n3r0/CVE-2026-20700","stars":17,"created":"2026-05-23"}]},"first":{"date":"2026-05-23","source":"PoC-in-GitHub","url":"https://github.com/R3n3r0/CVE-2026-20700"},"provenance":"source"},"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1068"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2026-02-11","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-20700","provenance":"source"},{"date":"2026-02-11","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","provenance":"source"},{"date":"2026-02-12","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2026-02-12","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-6189","provenance":"source"},{"date":"2026-05-23","kind":"exploit-public","label":"First public exploit: PoC-in-GitHub","url":"https://github.com/R3n3r0/CVE-2026-20700","provenance":"source"}],"speed":{"daysToPublicExploit":101,"firstExploitFrom":"PoC-in-GitHub","daysToKev":1},"priority":{"score":68.8,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":5.0,"detail":"added 262 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":15.38,"detail":"percentile 0.7689"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 PoC-in-GitHub repo"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":5.46,"detail":"base score 7.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-apple-ios-macos-cwe-119"}}