Remote code execution in Apple iOS

Published: 2020-04-22
Risk Critical
Patch available NO
Number of vulnerabilities 1
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
Apple iOS
Operating systems & Components / Operating system

Vendor Apple Inc.

Security Bulletin

This security bulletin contains one critical risk vulnerability.

1) Out-of-bounds write

EUVDB-ID: #VU27193

Risk: Critical

CVSSv3.1: 10 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:U/RC:C]


CWE-ID: CWE-787 - Out-of-bounds Write

Exploit availability: No


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing email in the iOS MobileMail. A remote attacker can send a specially crafted email message, trigger an out-of-bounds write and execute arbitrary code on the target system. No user interaction is required to execute arbitrary code.

Note, this vulnerability is being actively exploited in the wild.


Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Apple iOS: 11.0.0 - 11.0.3, 11.1 - 11.1.2, 11.2 - 11.2.6, 11.3 - 11.3.1, 11.4 - 11.4.1, 12.0 16A366 - 12.0.1 16A404, 12.1 16B92 - 12.1.4 16D57, 12.3 16F156 - 12.3.2 16F250, 12.4 16G77 - 12.4.3 16G130, 13.1 17A844 - 13.1.3 17A878, 13.2 17B84 - 13.2.3 17B111, 13.3 17C54 - 13.3.1 17D50, 13.4 17E255 - 13.4.1 17E262

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.