CVE-2025-43342

CRITICAL

Safari < 26.0 - Denial of Service via Malicious Web Content

Title source: llm
STIX 2.1

Description

A correctness issue was addressed with improved checks. This issue is fixed in Safari 26, iOS 18.7 and iPadOS 18.7, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. Processing maliciously crafted web content may lead to an unexpected process crash.

References (12)

Core 12
Core References
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125108
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125109
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125113
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125114
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125115
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125116
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Sep/49
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Sep/53
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Sep/57
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2025/Sep/59
Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2025/09/22/3

Scores

CVSS v3 9.8
EPSS 0.0047
EPSS Percentile 64.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-20
Status published
Products (16)
Apple/iOS and iPadOS < 18.7
Apple/iOS and iPadOS < 26
apple/ipados < 18.7
apple/iphone_os < 18.7
Apple/macOS < 26
apple/macos < 26.0
Apple/Safari < 26
apple/safari < 26.0
Apple/tvOS < 26
apple/tvos < 26.0
... and 6 more
Published Sep 15, 2025
Tracked Since Feb 18, 2026