CVE-2021-30807

Published: Oct 19, 2021Modified: Oct 23, 2025CISA KEV

7.8

Vector

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

Exploitability: 1.8 / Impact: 5.9

Source: NVD

Description

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.

Affected (4)

Products: Apple: Ipados, Iphone Os, Macos, Watchos

4 products

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Apple Ipados	Before 14.7.1
Apple Iphone Os	Before 14.7.1
Apple Macos	Before 11.5.1
Apple Watchos	Before 7.6.1

Related CWEs

Out-of-bounds Write

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

References (7)

https://support.apple.com/en-us/HT212622

Source: product-security@apple.com

Release NotesVendor Advisory

https://support.apple.com/en-us/HT212623

Source: product-security@apple.com

Release NotesVendor Advisory

https://support.apple.com/en-us/HT212713

Source: product-security@apple.com

Release NotesVendor Advisory

https://support.apple.com/en-us/HT212622

Source: af854a3a-2127-422b-91ae-364da2661108

Release NotesVendor Advisory

https://support.apple.com/en-us/HT212623

Source: af854a3a-2127-422b-91ae-364da2661108

Release NotesVendor Advisory

https://support.apple.com/en-us/HT212713

Source: af854a3a-2127-422b-91ae-364da2661108

Release NotesVendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30807

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Third Party AdvisoryUS Government Resource

Timeline

No history available yet.