CVE-2021-30666
HighActively exploited (CISA KEV)
Description
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3. 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..
SeverityHigh
CVSS8.8
Exploit probability—
Product
Apple iOS
PublishedSep 8, 2021
First seenSep 8, 2021
Added to KEVNov 3, 2021
Weakness typeCWE-119Memory buffer bounds error
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Nov 17, 2021Update
- apple iphone_os12.5.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple iphone_os | v < 12.5.3 | 12.5.3 |
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