9.3

CVE-2021-30807

Warning

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.5.1, iOS 14.7.1 and iPadOS 14.7.1, watchOS 7.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

Data is provided by the National Vulnerability Database (NVD)
Apple ≫ iPadOS Version < 14.7.1
Apple ≫ iPhone OS Version < 14.7.1
Apple ≫ macOS Version < 11.5.1
Apple ≫ watchOS Version < 7.6.1

03.11.2021: CISA Known Exploited Vulnerabilities (KEV) Catalog

Apple Multiple Products Memory Corruption Vulnerability

Vulnerability

Apple iOS, iPadOS, macOS, and watchOS IOMobileFrameBuffer contain a memory corruption vulnerability which may allow an application to execute code with kernel privileges.

Description

Apply updates per vendor instructions.

Required actions
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 20.31% 0.953
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvd@nist.gov 9.3 8.6 10
AV:N/AC:M/Au:N/C:C/I:C/A:C
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://support.apple.com/en-us/HT212622
Vendor Advisory
Release Notes
https://support.apple.com/en-us/HT212623
Vendor Advisory
Release Notes
https://support.apple.com/en-us/HT212713
Vendor Advisory
Release Notes