Wi-Fi in Apple iOS before 10.3.1 does not prevent CVE-2017-6956 stack buffer overflow exploitation via a crafted access point. NOTE: because an operating system could potentially isolate itself from CVE-2017-6956 exploitation without patching Broadcom firmware functions, there is a separate CVE ID for the operating-system behavior.
http://seclists.org/fulldisclosure/2019/May/24
http://www.securityfocus.com/bid/97328
http://www.securitytracker.com/id/1038172
https://googleprojectzero.blogspot.com/2017/04/over-air-exploiting-broadcoms-wi-fi_4.html
https://seclists.org/bugtraq/2019/May/30
https://support.apple.com/HT207688
Source: MITRE
Published: 2017-04-05
Updated: 2019-05-14
Type: CWE-119
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
Base Score: 6.8
Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 0.9
Severity: MEDIUM