{"id":"CVE-2016-4656","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-4656","generatedAt":"2026-10-27T17:43:08.339Z","title":"Apple iOS Memory Corruption Vulnerability","description":"The kernel in Apple iOS before 9.3.5 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.","published":"2016-08-25T21:59:01.000Z","lastModified":"2026-06-17T00:47:59.000Z","status":"Analyzed","sourceIdentifier":"product-security@apple.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["apple/iphone os"],"epss":{"score":0.23626,"percentile":0.97794,"date":"2026-10-26","history":[]},"kev":{"listed":true,"dateAdded":"2022-05-24","dueDate":"2022-06-14","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-4656"},"exploits":{"count":1,"verified":true,"firstPublished":"2018-06-05","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":44836,"kind":"exploit","title":"WebKit - not_number defineProperties UAF (Metasploit)","url":"https://www.exploit-db.com/exploits/44836","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/ios/remote/44836.rb","file":"exploits/ios/remote/44836.rb","published":"2018-06-05","added":"2018-06-05","updated":"2018-06-05","author":"Metasploit","type":"remote","platform":"ios","port":null,"verified":true,"codes":["CVE-2016-4657","CVE-2016-4656","CVE-2016-4655"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://raw.githubusercontent.com/rapid7/metasploit-framework/61a98b94b62c8ae33148f8d9a21d07fd1bbe8745/modules/exploits/apple_ios/browser/webkit_trident.rb"}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 14 June 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.html","tags":["Broken Link","Mailing List","Vendor Advisory"],"source":"product-security@apple.com"},{"url":"http://www.securityfocus.com/bid/92652","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"product-security@apple.com"},{"url":"http://www.securitytracker.com/id/1036694","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"product-security@apple.com"},{"url":"https://blog.lookout.com/blog/2016/08/25/trident-pegasus/","tags":["Broken Link"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/HT207107","tags":["Release Notes","Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://www.exploit-db.com/exploits/44836/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"product-security@apple.com"},{"url":"http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.html","tags":["Broken Link","Mailing List","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/92652","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id/1036694","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://blog.lookout.com/blog/2016/08/25/trident-pegasus/","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.apple.com/HT207107","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/44836/","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4656","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-4656","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}