What is CVE-2025-43509?

CVE-2025-43509 is a medium-severity vulnerability in Apple Macos, classified under Information Disclosure. CVSS score: 5.5/10. Published 2025-12-12.

How severe is CVE-2025-43509?

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

Information disclosure in Apple Macos

CVE-2025-43509

This issue was addressed with improved data protection. This issue is fixed in macOS Sequoia 15.7.3, macOS Sonoma 14.8.3, macOS Tahoe 26.2. An app may be able to access sensitive user data.

Vulnerability class: Information Disclosure

EPSS: 0.002 (8.1th 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)

CWE-200 — Information Disclosure

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-2025-43509?: CVE-2025-43509 is a medium-severity vulnerability in Apple Macos, classified under Information Disclosure. CVSS score: 5.5/10. Published 2025-12-12.
How severe is CVE-2025-43509?: Medium severity. CVSS v3 base score is 5.5 out of 10.