CVE-2021-30807
HighActively exploited (CISA KEV)
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Apple Multiple Products
PublishedOct 19, 2021
First seenOct 19, 2021
Added to KEVNov 3, 2021
Weakness typeCWE-787Out-of-bounds write
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Nov 17, 2021Update
- apple ipados14.7.1 or later
- apple iphone_os14.7.1 or later
- apple macos11.5.1 or later
- apple watchos7.6.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple ipados | v < 14.7.1 | 14.7.1 |
| apple iphone_os | v < 14.7.1 | 14.7.1 |
| apple macos | v < 11.5.1 | 11.5.1 |
| apple watchos | v < 7.6.1 | 7.6.1 |
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