Out-of-Bounds Read Vulnerability in Apple macOS Products
CVE-2026-43757

9.8CRITICAL

Key Information:

Vendor

Apple
Status
iOS And iPad OS
Mac OS
Vendor
CVE Published:
27 July 2026

What is CVE-2026-43757?

An out-of-bounds read vulnerability in Apple’s macOS could allow applications to access memory outside their allocated bounds, potentially leading to unexpected system terminations. This vulnerability has been addressed through enhanced bounds checking in the updated versions of macOS. Users are strongly advised to update to macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and macOS Tahoe 26.6 to mitigate this risk.

Affected Version(s)

iOS and iPadOS 0 < 18.7.10

macOS 0 < 14.8.8

macOS 0 < 15.7.8

References

https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128071
https://support.apple.com/en-us/128072

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.