CVE-2026-39877

Published: Jul 27, 2026Modified: Oct 24, 2026

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. An app may be able to disclose kernel memory.

Affected (2)

Products: Apple: Macos

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Apple Macos	14.0 ≤ version < 14.8.8
Apple Macos	15.0 ≤ version < 15.7.8

Related CWEs

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (8)

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

Source: product-security@apple.com

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

Source: product-security@apple.com

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

Source: product-security@apple.com

https://support.apple.com/en-us/127119

Source: product-security@apple.com

https://support.apple.com/en-us/127120

Source: product-security@apple.com

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

Source: product-security@apple.com

Release NotesVendor Advisory

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

Source: product-security@apple.com

Release NotesVendor Advisory

https://support.apple.com/en-us/148287

Source: product-security@apple.com

Timeline

No history available yet.