CVE-2026-39877 — Vulnetix

CVE-2026-39877 PUBLISHED CVSS 7.8 HIGH

Reported by apple · Published July 27, 2026

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.

Risk Scores

CVSS 3.1

7.8

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

Affected Products

Vendor	Product	Versions
Apple	macOS	0, 0
Apple	macOS	0, 0

Timeline

Jul 27, 2026 CVE Published
Jul 28, 2026 Security Advisory
Jul 29, 2026 Coalition ESS Score
Jul 29, 2026 CVE Updated

References

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