CVE-2025-43421

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS Trends

Current EPSS score: 0.03%• Percentile: 8%

Techniques & Countermeasures

• CWE-125•Out-of-bounds Read

  The product reads data past the end, or before the beginning, of the intended buffer.

• CWE-787•Out-of-bounds Write

  The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

• apple•ios and ipados

  ≥ unspecified, < 26.1 | < 26.1

• apple•ipados

  < 26.1

• apple•iphone_os

  < 26.1

• apple•macos

  ≥ unspecified, < 26.1 | < 26.1

• apple•safari

  ≥ unspecified, < 26.1 | < 26.1

• apple•visionos

  ≥ unspecified, < 26.1 | < 26.1

References (4)

• https://support.apple.com/en-us/125640
• https://support.apple.com/en-us/125634
• https://support.apple.com/en-us/125638
• https://support.apple.com/en-us/125632