CVE-2025-43421

MEDIUM

iOS <26.1 - Use After Free

Title source: llm
STIX 2.1

Description

Multiple issues were addressed by disabling array allocation sinking. This issue is fixed in Safari 26.1, iOS 26.1 and iPadOS 26.1, macOS Tahoe 26.1, visionOS 26.1. Processing maliciously crafted web content may lead to an unexpected process crash.

References (4)

Core 4
Core References
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125632
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125638
Release Notes, Vendor Advisory
https://support.apple.com/en-us/125640

Scores

CVSS v3 4.3
EPSS 0.0004
EPSS Percentile 11.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-125 CWE-787
Status published
Products (8)
Apple/iOS and iPadOS < 26.1
apple/ipados < 26.1
apple/iphone_os < 26.1
Apple/macOS < 26.1
apple/safari < 26.1
Apple/Safari < 26.1
apple/visionos < 26.1
Apple/visionOS < 26.1
Published Nov 04, 2025
Tracked Since Feb 18, 2026