CVE-2026-64736 Apple iOS & macOS - Out of Bounds Read/Write

Apple iOS 26.6.1, iPadOS 26.6.1, macOS Sequoia 15.8, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, and watchOS 27 contain an out-of-bounds read/write caused by insufficient bounds checking, letting apps cause system termination or kernel memory corruption, exploit requires malicious app.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.16% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Out of Bounds Read/Write
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-125

Vendor fix

Update to iOS 26.6.1, iPadOS 26.6.1, macOS Sequoia 15.8, macOS Tahoe 26.6.2, tvOS 27, visionOS 27, watchOS 27 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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