CVE-2025-43494

Severity CVSS v4.0:

Pending analysis

Type:

CWE-20 Input Validation

Publication date:

12/12/2025

Last modified:

02/04/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:apple:ipados::::::::		18.7.2 (excluding)
cpe:2.3:o:apple:ipados:26.0:::::::*
cpe:2.3:o:apple:iphone_os::::::::		18.7.2 (excluding)
cpe:2.3:o:apple:iphone_os:26.0:::::::*
cpe:2.3:o:apple:macos::::::::	14.0 (including)	14.8.2 (excluding)
cpe:2.3:o:apple:macos::::::::	15.0 (including)	15.7.2 (excluding)
cpe:2.3:o:apple:macos:26.0:::::::*
cpe:2.3:o:apple:visionos::::::::		26.1 (excluding)
cpe:2.3:o:apple:watchos::::::::		26.1 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-43494

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools