#VU56731 Memory corruption

Published: 2021-09-20 | Updated: 2021-11-01

Vulnerability identifier: #VU56731

Vulnerability risk: High


CVE-ID: CVE-2021-30848


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apple iOS
Operating systems & Components / Operating system
Operating systems & Components / Operating system

Vendor: Apple Inc.


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content in WebKit. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Install updates from vendor's website.

Vulnerable software versions

Apple iOS: 14.8 18H17, 14.7 18G69 - 14.7.1 18G82, 14.5 18E199 - 14.5.1 18E212, 14.2 18B92 - 14.2.1 18B121, 14.0 18A373 - 14.0.1 18A393, 14.4 18D52 - 14.4.2 18D70

iPadOS: 14.0 18A373 - 14.8 18H17


External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

Latest bulletins with this vulnerability