Memory Management Flaw in Safari and Apple Operating Systems
CVE-2025-43434

4.3MEDIUM

Key Information:

Vendor

Apple
Status
Safari
Mac OS
Visionos
Watch OS
Vendor
CVE Published:
4 November 2025

What is CVE-2025-43434?

A memory management flaw identified in Safari and various Apple operating systems can be exploited through maliciously crafted web content. This vulnerability may result in an unexpected crash of the Safari browser, impacting user experience and security. Thankfully, this issue has been addressed in the latest updates for watchOS, iOS, iPadOS, Safari, and visionOS, enhancing the overall security posture of Apple products.

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Affected Version(s)

iOS and iPadOS < 26.1

iOS and iPadOS < 18.7

macOS < 26.1

References

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

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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