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.
Affected products
apple: ipados; apple: iphone os; apple: macos; apple: visionos; apple: watchos
References7
- support.apple.com/en-us/125632 Release NotesVendor Advisory
- support.apple.com/en-us/125633 Release NotesVendor Advisory
- support.apple.com/en-us/125634 Release NotesVendor Advisory
- support.apple.com/en-us/125635 Release NotesVendor Advisory
- support.apple.com/en-us/125636 Release NotesVendor Advisory
- support.apple.com/en-us/125638 Release NotesVendor Advisory
- support.apple.com/en-us/125639 Release NotesVendor Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 48 · as of 11 November 2026
- CWE
- CWE-20
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.