Use-After-Free Vulnerability in Safari and Apple Operating Systems
CVE-2026-43704

5.3MEDIUM

Key Information:

Vendor

Apple
Status
Safari
iOS And iPad OS
Mac OS
Vendor
CVE Published:
29 June 2026

What is CVE-2026-43704?

A use-after-free vulnerability has been identified in Safari and various Apple operating systems, allowing a malicious web extension to potentially exploit memory management flaws, leading to unexpected process crashes. This issue has been rectified in version 26.5.2 of Safari, iOS, iPadOS, and macOS Tahoe, ensuring enhanced stability and security for users.

Affected Version(s)

iOS and iPadOS 0 < 26.5.2

macOS 0 < 26.5.2

Safari 0 < 26.5.2

References

https://support.apple.com/en-us/127594
https://support.apple.com/en-us/127595
https://support.apple.com/en-us/127685

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.