CVE-2025-43494
High
Description
A mail header parsing issue was addressed with improved checks. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, visionOS 26.1, watchOS 26.1. An attacker may be able to cause a persistent denial-of-service.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Apple Ipados
PublishedDec 12, 2025
First seenDec 12, 2025
Weakness typeCWE-20Improper input validation
How to fix
Update
- apple ipados18.7.2 or later
- apple iphone_os18.7.2 or later
- apple macos14.8.2, 15.7.2 or later
- apple visionos26.1 or later
- apple watchos26.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apple ipados | v < 18.7.2, 26.0 | 18.7.2 |
| apple iphone_os | v < 18.7.2, 26.0 | 18.7.2 |
| apple macos | 14.0 ≤ v < 14.8.2, 15.0 ≤ v < 15.7.2, 26.0 | 14.8.2, 15.7.2 |
| apple visionos | v < 26.1 | 26.1 |
| apple watchos | v < 26.1 | 26.1 |
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