🛡️ CVE-2025-43343
🔴 CVSS 9.8 — Critical ✅ No Known Exploit CWE-119 NVD
9.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26, 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.

Details

Severity CRITICAL
CVSS Score 9.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-119
Public Exploit ✅ No
Source NVD
Published 2025-09-15
Updated 2026-06-02
Modified 2026-04-02
Fix URL N/A

Affected Packages

Software From version Fixed in
ipados — 26.0
iphone-os — 26.0
macos — 26.0
safari — 26.0
tvos — 26.0
visionos — 26.0
watchos — 26.0
webkitgtk — 2.50.1
wpe-webkit — 2.50.1

References

Release Notes, Vendor Advisory https://support.apple.com/en-us/125108
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/2025/10/13/4

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