Unrated severityNVD Advisory· Published Jul 27, 2026· Updated Jul 28, 2026

CVE-2026-39877

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.

Affected products

Apple Inc./macOS Sequoiallm-fuzzy
Range: 15.7.8
Apple Inc./macOS Sonomallm-fuzzy
Range: 14.8.8

Patches

Vulnerability mechanics

References

support.apple.com/en-us/128071mitre
support.apple.com/en-us/128072mitre

News mentions

Apple Patches Everything (July 2026), (Wed, Jul 29th)
SANS Internet Storm Center · Jul 29, 2026

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