CVE-2023-43000
HighActively exploited (CISA KEV)
Description
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Ventura 13.5, iOS 16.6 and iPadOS 16.6, Safari 16.6, iOS 15.8.7 and iPadOS 15.8.7. Processing maliciously crafted web content may lead to memory corruption.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Apple Multiple Products
PublishedNov 5, 2025
First seenNov 5, 2025
Added to KEVMar 5, 2026
Weakness typeCWE-416Use after free
How to fix
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: Mar 26, 2026Update
- apple safari16.6 or later
- apple ipados15.8.7, 16.6 or later
- apple iphone_os15.8.7, 16.6 or later
- apple macos13.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple safari | v < 16.6 | 16.6 |
| apple ipados | v < 15.8.7, 16.0 ≤ v < 16.6 | 15.8.7, 16.6 |
| apple iphone_os | v < 15.8.7, 16.0 ≤ v < 16.6 | 15.8.7, 16.6 |
| apple macos | v < 13.5 | 13.5 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.