{"id":"CVE-2016-4657","aliases":["EUVD-2016-5643","GHSA-99xm-29ff-vvqm","MGASA-2017-0069","UBUNTU-CVE-2016-4657","USN-3166-1"],"status":"published","title":"WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a...","description":"WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-06","score":0.66788,"percentile":0.99295,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":true},"cwes":["CWE-119","CWE-787"],"published":"2016-08-25T00:00:00Z","modified":"2026-10-08T12:49:50Z","kev":{"date_added":"2022-05-24","due_date":"2022-06-14","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2022-05-24"},{"source":"kev","since":"2022-05-24"}],"exploits":[{"source":"metasploit","id":"exploit/apple_ios/browser/webkit_trident","title":"WebKit not_number defineProperties UAF","type":"exploit","platform":"Apple_iOS","date":"2016-08-25","verified":true,"url":"https://www.rapid7.com/db/modules/exploit/apple_ios/browser/webkit_trident"},{"source":"exploitdb","id":"EDB-44213","title":"Nintendo Switch - WebKit Code Execution (PoC)","type":"dos","platform":"hardware","date":"2017-03-12","url":"https://www.exploit-db.com/exploits/44213"},{"source":"pocgithub","id":"Mimoja/CVE-2016-4657-NintendoSwitch","title":"Mimoja/CVE-2016-4657-NintendoSwitch","date":"2017-03-13","url":"https://github.com/Mimoja/CVE-2016-4657-NintendoSwitch"},{"source":"pocgithub","id":"iDaN5x/Switcheroo","title":"iDaN5x/Switcheroo","date":"2017-06-02","url":"https://github.com/iDaN5x/Switcheroo"},{"source":"exploitdb","id":"EDB-44836","title":"WebKit - not_number defineProperties UAF (Metasploit)","type":"remote","platform":"ios","date":"2018-06-05","verified":true,"url":"https://www.exploit-db.com/exploits/44836"},{"source":"pocgithub","id":"viai957/webkit-vulnerability","title":"viai957/webkit-vulnerability","date":"2018-11-11","url":"https://github.com/viai957/webkit-vulnerability"}],"fixes":[{"ecosystem":"Ubuntu:16.04:LTS","package":"webkit2gtk","fixed_in":["2.14.2-0ubuntu0.16.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Mageia:5","package":"webkit2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.14.5-1.mga5"}]}],"bundled":60},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"webkit2gtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.14.2-0ubuntu0.16.04.1"}]}],"versions":["2.8.5+dfsg1-3","2.10.3+dfsg1-1","2.10.4+dfsg1-1","2.10.5-1","2.10.6-1","2.10.6-1ubuntu1","2.10.8-1ubuntu1","2.10.9-1ubuntu1","2.12.5-0ubuntu0.16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"qtwebkit-opensource-src","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.2+dfsg-1ubuntu2.1","5.5.1+dfsg-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"qtwebkit-source","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.2-0ubuntu10","2.3.2-0ubuntu11"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"webkitgtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.9-2ubuntu2","2.4.10-0ubuntu1","2.4.11-0ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"webkit2gtk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.14.2-0ubuntu0.16.04.1"}]}],"versions":["2.8.5+dfsg1-3","2.10.3+dfsg1-1","2.10.4+dfsg1-1","2.10.5-1","2.10.6-1","2.10.6-1ubuntu1","2.10.8-1ubuntu1","2.10.9-1ubuntu1","2.12.5-0ubuntu0.16.04.1"],"bundled":18}],"products":[{"vendor":"apple","product":"ios"},{"vendor":"apple","product":"iphone_os"}],"references":[{"url":"https://blog.lookout.com/blog/2016/08/25/trident-pegasus/","tags":["x_refsource_MISC","x_transferred","Broken Link"]},{"url":"https://www.youtube.com/watch?v=xkdPjbaLngE","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"https://www.exploit-db.com/exploits/44836/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/92653","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://support.apple.com/HT207107","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Vendor Advisory","report"]},{"url":"http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.html","tags":["vendor-advisory","x_refsource_APPLE","x_transferred","Broken Link","Mailing List","Vendor Advisory","report"]},{"url":"http://www.securitytracker.com/id/1036694","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4657","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-4657"},{"url":"https://blog.lookout.com/blog/2016/08/25/trident-pegasus"},{"url":"https://www.exploit-db.com/exploits/44836"},{"url":"https://github.com/advisories/GHSA-99xm-29ff-vvqm"},{"url":"https://advisories.mageia.org/MGASA-2017-0069.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=19721","tags":["report"]},{"url":"https://webkitgtk.org/security/WSA-2016-0006.html","tags":["web","report"]},{"url":"https://webkitgtk.org/security/WSA-2017-0001.html","tags":["web"]},{"url":"https://webkitgtk.org/security/WSA-2017-0002.html","tags":["web"]},{"url":"https://webkitgtk.org/2016/09/05/webkitgtk2.12.5-released.html","tags":["web"]},{"url":"https://webkitgtk.org/2016/09/20/webkitgtk2.14.0-released.html","tags":["web"]},{"url":"https://webkitgtk.org/2016/10/11/webkitgtk2.14.1-released.html","tags":["web"]},{"url":"https://webkitgtk.org/2016/11/03/webkitgtk2.14.2-released.html","tags":["web"]},{"url":"https://webkitgtk.org/2017/01/17/webkitgtk2.14.3-released.html","tags":["web"]},{"url":"https://webkitgtk.org/2017/02/10/webkitgtk2.14.4-released.html","tags":["web"]},{"url":"https://webkitgtk.org/2017/02/15/webkitgtk2.14.5-released.html","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2016-4657","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-3166-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-4657","tags":["report"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4613","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4666","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4707","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4728","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4733","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4734","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4735","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4759","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4760","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4761","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4762","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4764","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4765","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4767","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4768","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4769","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-7578","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-4657","description":"WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.","status":"published","published":"2016-08-25T21:00:00Z","modified":"2025-10-21T23:55:50.057Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:33:35.149563Z"}],"euvd":[{"id":"EUVD-2016-5643","description":"WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.","status":"published","published":"2016-08-25T21:00:00Z","modified":"2025-10-21T23:55:50Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"exploited_since":"2022-05-24","updated_at":"2026-11-02T19:49:39.684828Z"}],"ghsa":[{"id":"GHSA-99xm-29ff-vvqm","title":"WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a...","description":"WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.","status":"published","published":"2022-05-14T03:19:57Z","modified":"2025-10-22T00:31:17Z","cvss":[{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119","CWE-787"],"updated_at":"2026-11-02T15:04:03.556367Z"}],"kev":[{"id":"CVE-2016-4657","title":"Apple iOS Webkit Memory Corruption Vulnerability","description":"Apple iOS WebKit contains a memory corruption vulnerability that allows attackers to execute remote code or cause a denial-of-service (DoS) via a crafted web site. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.","cwes":["CWE-119"],"kev":{"date_added":"2022-05-24","due_date":"2022-06-14","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:16.541131Z"}],"nvd":[{"id":"CVE-2016-4657","description":"WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.","status":"published","published":"2016-08-25T21:59:02.15Z","modified":"2026-06-17T00:47:58.727Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:03:28.854267Z"}],"osv":[{"id":"UBUNTU-CVE-2016-4657","description":"WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.","status":"published","published":"2016-08-25T00:00:00Z","modified":"2026-10-08T12:49:50.534454087Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:12.261906Z"},{"id":"MGASA-2017-0069","title":"Updated webkit2 packages fix security vulnerabilities","description":"The webkit2 package has been updated to version 2.14.5, fixing several\nsecurity issues and other bugs.\n","status":"published","published":"2017-03-02T15:11:17Z","modified":"2026-04-16T06:26:13.364299176Z","updated_at":"2026-11-02T15:49:40.103088Z"},{"id":"USN-3166-1","title":"webkit2gtk vulnerabilities","description":"A large number of security issues were discovered in the WebKitGTK+ Web and\nJavaScript engines. If a user were tricked into viewing a malicious\nwebsite, a remote attacker could exploit a variety of issues related to web\nbrowser security, including cross-site scripting attacks, denial of service\nattacks, and arbitrary code execution.\n","status":"published","published":"2017-01-10T18:45:49Z","modified":"2026-04-22T09:31:03.870978Z","updated_at":"2026-11-02T16:58:10.303275Z"}]}}