CVE-2025-43494: ipados Input Validation Flaw — Fix

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
apple	ipados	< 18.7.2
apple	ipados	All
apple	iphone_os	< 18.7.2
apple	iphone_os	All
apple	macos	14.0 — 14.8.2
apple	macos	15.0 — 15.7.2
apple	macos	All
apple	visionos	< 26.1
apple	watchos	< 26.1

References

Advisories & Patches

https://support.apple.com/en-us/125632 https://support.apple.com/en-us/125633 https://support.apple.com/en-us/125634 https://support.apple.com/en-us/125635 https://support.apple.com/en-us/125636 https://support.apple.com/en-us/125638 https://support.apple.com/en-us/125639

Frequently Asked Questions

What is CVE-2025-43494? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-43494? +

CVE-2025-43494 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-43494? +

CVE-2025-43494 affects products from apple, specifically: ipados, iphone_os, macos, visionos, watchos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-43494? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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