What is CVE-2026-43779?

CVE-2026-43779 is a critical-severity vulnerability in Apple Macos, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-07-27.

How severe is CVE-2026-43779?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Apple Macos

CVE-2026-43779

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to intercept network connections intended for another process.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apple Macos — versions 0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

product-security@apple.com (Release Notes, Vendor Advisory)
product-security@apple.com (Release Notes, Vendor Advisory)
product-security@apple.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-43779?: CVE-2026-43779 is a critical-severity vulnerability in Apple Macos, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-07-27.
How severe is CVE-2026-43779?: Critical severity. CVSS v3 base score is 9.8 out of 10.