What is CVE-2026-43756?

CVE-2026-43756 is a medium-severity vulnerability in Apple macOS, classified under Information Disclosure. CVSS score: 5.5/10. Published 2026-07-27.

How severe is CVE-2026-43756?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Auth bypass in Apple macOS

CVE-2026-43756

A logic issue was addressed with improved validation. 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 access user-sensitive data.

Vulnerability class: Information Disclosure

EPSS: 0.002 (6.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Apple Macos — versions 0

Weakness classification (CWE)

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-2026-43756?: CVE-2026-43756 is a medium-severity vulnerability in Apple macOS, classified under Information Disclosure. CVSS score: 5.5/10. Published 2026-07-27.
How severe is CVE-2026-43756?: Medium severity. CVSS v3 base score is 5.5 out of 10.