{"id":"CVE-2017-2491","aliases":["EUVD-2017-11674","GHSA-v5gq-732w-q78g"],"status":"published","title":"Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS...","description":"Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS before 10.3 allows remote attackers to execute arbitrary code via a crafted web page, or a crafted file.","severity":{"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","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.08038,"percentile":0.94821,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-416"],"published":"2017-06-27T20:00:00Z","modified":"2026-06-17T01:16:18Z","exploits":[{"source":"exploitdb","id":"EDB-41964","title":"Apple Safari 10.0.3 - 'JSC::CachedCall' Use-After-Free","type":"remote","platform":"macos","date":"2017-05-04","verified":true,"url":"https://www.exploit-db.com/exploits/41964"}],"products":[{"vendor":"apple","product":"iphone_os"}],"references":[{"url":"https://support.apple.com/en-us/HT207617","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://www.exploit-db.com/exploits/41964/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"]},{"url":"http://www.zerodayinitiative.com/advisories/ZDI-17-321","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/98316","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-2491"},{"url":"https://www.exploit-db.com/exploits/41964"},{"url":"https://github.com/advisories/GHSA-v5gq-732w-q78g"}],"sources":{"cve":[{"id":"CVE-2017-2491","description":"Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS before 10.3 allows remote attackers to execute arbitrary code via a crafted web page, or a crafted file.","status":"published","published":"2017-06-27T20:00:00Z","modified":"2024-08-05T13:55:06.115Z","updated_at":"2026-11-02T14:33:15.887816Z"}],"euvd":[{"id":"EUVD-2017-11674","description":"Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS before 10.3 allows remote attackers to execute arbitrary code via a crafted web page, or a crafted file.","status":"published","published":"2017-06-27T20:00:00Z","modified":"2024-08-05T13:55:06Z","updated_at":"2026-11-03T02:39:20.499267Z"}],"ghsa":[{"id":"GHSA-v5gq-732w-q78g","title":"Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS...","description":"Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS before 10.3 allows remote attackers to execute arbitrary code via a crafted web page, or a crafted file.","status":"published","published":"2022-05-13T01:44:52Z","modified":"2025-04-20T03:39:36Z","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-416"],"updated_at":"2026-11-02T15:01:47.375435Z"}],"nvd":[{"id":"CVE-2017-2491","description":"Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS before 10.3 allows remote attackers to execute arbitrary code via a crafted web page, or a crafted file.","status":"published","published":"2017-06-27T20:29:00.98Z","modified":"2026-06-17T01:16:18.743Z","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","assessor":"primary"},{"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-416"],"updated_at":"2026-11-02T14:03:51.893212Z"}]}}