{"id":"CVE-2019-8662","aliases":["EUVD-2019-18052","GHSA-v448-6mjx-mr34"],"status":"published","title":"This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10...","description":"This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.09776,"percentile":0.95569,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-416","CWE-502"],"published":"2019-12-18T17:33:20Z","modified":"2026-06-17T02:42:20Z","exploits":[{"source":"exploitdb","id":"EDB-47189","title":"macOS / iOS NSKeyedUnarchiver - Use-After-Free of ObjC Objects when Unarchiving OITSUIntDictionary Instances","type":"dos","platform":"multiple","date":"2019-07-30","verified":true,"url":"https://www.exploit-db.com/exploits/47189"},{"source":"exploitdb","id":"EDB-47608","title":"iMessage - Decoding NSSharedKeyDictionary can read ObjC Object at Attacker Controlled Address","type":"dos","platform":"multiple","date":"2019-11-11","verified":true,"url":"https://www.exploit-db.com/exploits/47608"}],"products":[{"vendor":"apple","product":"ios"},{"vendor":"apple","product":"iphone_os"},{"vendor":"apple","product":"mac_os_x"},{"vendor":"apple","product":"macos"},{"vendor":"apple","product":"tvos"},{"vendor":"apple","product":"watchos"},{"vendor":"cisco","product":"ios"}],"references":[{"url":"https://support.apple.com/HT210353","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/HT210346","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/HT210348","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://support.apple.com/HT210351","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-8662"},{"url":"https://github.com/advisories/GHSA-v448-6mjx-mr34"}],"sources":{"cve":[{"id":"CVE-2019-8662","description":"This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.","status":"published","published":"2019-12-18T17:33:20Z","modified":"2024-08-04T21:24:29.58Z","updated_at":"2026-11-02T14:20:21.703364Z"}],"euvd":[{"id":"EUVD-2019-18052","description":"This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.","status":"published","published":"2019-12-18T17:33:20Z","modified":"2024-08-04T21:24:29Z","updated_at":"2026-11-03T03:06:42.084203Z"}],"ghsa":[{"id":"GHSA-v448-6mjx-mr34","title":"This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10...","description":"This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.","status":"published","published":"2022-05-24T17:04:24Z","modified":"2023-01-29T05:00:49Z","updated_at":"2026-11-02T14:44:40.234855Z"}],"nvd":[{"id":"CVE-2019-8662","description":"This issue was addressed with improved checks. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3. An attacker may be able to trigger a use-after-free in an application deserializing an untrusted NSDictionary.","status":"published","published":"2019-12-18T18:15:31.817Z","modified":"2026-06-17T02:42:20.053Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-416","CWE-502"],"updated_at":"2026-11-02T14:05:40.856496Z"}]}}