CVE-2021-30858

Published Aug 24, 2021

Last updated 4 months ago

Overview

Description
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. 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.
Source
product-security@apple.com
NVD status
Analyzed

Risk scores

CVSS 3.1

Type
Primary
Base score
8.8
Impact score
5.9
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity
HIGH

CVSS 2.0

Type
Primary
Base score
6.8
Impact score
6.4
Exploitability score
8.6
Vector string
AV:N/AC:M/Au:N/C:P/I:P/A:P

Known exploits

Data from CISA

Vulnerability name
Apple iOS, iPadOS, macOS Use-After-Free Vulnerability
Exploit added on
Nov 3, 2021
Exploit action due
Nov 17, 2021
Required action
Apply updates per vendor instructions.

Weaknesses

nvd@nist.gov
CWE-416

Social media

Hype score
Not currently trending

Configurations