What is CVE-2026-43806?

CVE-2026-43806 is a medium-severity vulnerability in Apple macOS, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2026-07-27.

How severe is CVE-2026-43806?

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

Resource exhaustion in Apple macOS

CVE-2026-43806

A denial of service issue was addressed by removing the vulnerable code. This issue is fixed in macOS Tahoe 26.6. A local attacker may be able to cause a denial of service.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Apple Macos — versions 0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

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

Frequently asked questions

What is CVE-2026-43806?: CVE-2026-43806 is a medium-severity vulnerability in Apple macOS, classified under Uncontrolled Resource Consumption. CVSS score: 5.5/10. Published 2026-07-27.
How severe is CVE-2026-43806?: Medium severity. CVSS v3 base score is 5.5 out of 10.