CVE-2025-43368

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-15 · updated 2026-10-18
Weakness: CWE-416

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26, iOS 26 and iPadOS 26, macOS Tahoe 26. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Affected products

Apple iPadOS: before 26.0 — fixed in 26.0
Apple Iphone Os: before 26.0 — fixed in 26.0
Apple macOS: before 26.0 — fixed in 26.0
Apple Safari: before 26.0 — fixed in 26.0

How to fix

Upgrade to a fixed version: Apple iPadOS 26.0; Apple Iphone Os 26.0; Apple macOS 26.0; Apple Safari 26.0. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/125108
https://support.apple.com/en-us/125110
https://support.apple.com/en-us/125113
http://seclists.org/fulldisclosure/2025/Sep/49
http://seclists.org/fulldisclosure/2025/Sep/53
http://seclists.org/fulldisclosure/2025/Sep/59
http://www.openwall.com/lists/oss-security/2025/09/22/3
https://cert-portal.siemens.com/productcert/html/ssa-032379.html

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