CVE-2025-43494

HIGH

iPadOS < 18.7.2 - Persistent Denial-of-Service via Mail Header Parsing

Title source: llm
STIX 2.1

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.

References (7)

Core 7
Core References
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125632
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125633
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125634
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125635
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125636
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125638
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125639

Scores

CVSS v3 7.5
EPSS 0.0015
EPSS Percentile 34.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-20
Status published
Products (15)
Apple/iOS and iPadOS < 18.7.2
Apple/iOS and iPadOS < 26.1
apple/ipados 26.0
apple/ipados < 18.7.2
apple/iphone_os 26.0
apple/iphone_os < 18.7.2
apple/macos 26.0
Apple/macOS < 14.8.2
Apple/macOS < 15.7.2
Apple/macOS < 26.1
... and 5 more
Published Dec 12, 2025
Tracked Since Feb 18, 2026