CVE-2026-39877

HIGH

macOS < 14.8.8 and < 15.7.8 - Unprotected Kernel Memory Disclosure via Memory Corruption

Title source: llm

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. An app may be able to disclose kernel memory.

References (2)

Core 2

Core References

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

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

Scores

CVSS v3 7.8

EPSS 0.0013

EPSS Percentile 3.1%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-119

Status published

Products (3)

Apple/macOS < 14.8.8

Apple/macOS < 15.7.8

apple/macos 14.0 - 14.8.8

Published Jul 27, 2026

Tracked Since Jul 28, 2026