Memory Handling Vulnerability in Apple's Safari Browser
CVE-2026-43658

7.5HIGH

Key Information:

Vendor

Apple
Status
Safari
iOS And iPad OS
Mac OS
TV OS
Vendor
CVE Published:
11 May 2026

What is CVE-2026-43658?

A memory handling issue in Apple's Safari browser was identified that could be triggered by processing maliciously crafted web content. This flaw may result in an unexpected crash of the browser, potentially impacting user experience and security. Users are encouraged to update their devices to the latest versions, where this issue has been resolved to enhance stability and security.

Affected Version(s)

iOS and iPadOS 0 < 26.5

macOS 0 < 26.5

Safari 0 < 26.5

References

https://support.apple.com/en-us/127110
https://support.apple.com/en-us/127115
https://support.apple.com/en-us/127118

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.