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.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-25)

CWE

CWE-20

Published

2025-12-12

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

Affected

• apple:ipados
• apple:iphone_os
• apple:macos
• apple:visionos
• apple:watchos

References

• 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

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