Buffer Overflow Vulnerability in Apple iOS, iPadOS, macOS, tvOS, and visionOS Products
CVE-2026-64771

9.8CRITICAL

Key Information:

Vendor

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

What is CVE-2026-64771?

A buffer overflow vulnerability has been identified in Apple’s operating systems, affecting various products. This issue arose due to inadequate bounds checking and could potentially allow a remote attacker to induce unexpected application termination or lead to heap corruption. Apple has addressed this vulnerability with updates and recommends users upgrade to the latest versions of iOS, iPadOS, macOS, tvOS, and visionOS to mitigate the risk associated with this issue.

Affected Version(s)

iOS and iPadOS 0 < 26.6

macOS 0 < 15.7.8

macOS 0 < 26.6

References

https://support.apple.com/en-us/128066
https://support.apple.com/en-us/128067
https://support.apple.com/en-us/128069

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

.