CVE-2021-30661

high

Description

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.1, iOS 12.5.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5, macOS Big Sur 11.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

References

https://support.apple.com/en-us/HT212341

https://support.apple.com/en-us/HT212318

https://support.apple.com/en-us/HT212317

https://support.apple.com/en-us/HT212325

https://support.apple.com/en-us/HT212323

https://support.apple.com/en-us/HT212324

Details

Source: MITRE

Published: 2021-09-08

Updated: 2021-09-20

Type: CWE-416

Risk Information

CVSS v2

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH