CVE-2025-43494
Dec. 16, 2025, 6:36 p.m.
7.5
High
Description
A mail header parsing issue was addressed with improved checks. This issue is fixed in watchOS 26.1, iOS 18.7.2 and iPadOS 18.7.2, macOS Tahoe 26.1, visionOS 26.1, macOS Sonoma 14.8.2, macOS Sequoia 15.7.2, iOS 26.1 and iPadOS 26.1. An attacker may be able to cause a persistent denial-of-service.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Apple |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-20
Improper Input Validation
The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| o | apple | ipados | / | / | / | / | / | / | / | / |
| o | apple | ipados | 26.0 | / | / | / | / | / | / | / |
| o | apple | iphone_os | / | / | / | / | / | / | / | / |
| o | apple | iphone_os | 26.0 | / | / | / | / | / | / | / |
| o | apple | macos | / | / | / | / | / | / | / | / |
| o | apple | macos | / | / | / | / | / | / | / | / |
| o | apple | macos | 26.0 | / | / | / | / | / | / | / |
| o | apple | visionos | / | / | / | / | / | / | / | / |
| o | apple | watchos | / | / | / | / | / | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: NONE
- Scope: UNCHANGED
- Confidentiality Impact: NONE
- Integrity Impact: NONE
- Availability Impact: HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Timeline
Published: Dec. 12, 2025, 9:15 p.m.
Last Modified: Dec. 16, 2025, 6:36 p.m.
Last Modified: Dec. 16, 2025, 6:36 p.m.
Status : Analyzed
CVE has had analysis completed and all data associations made.
More infoSource
product-security@apple.com
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.