CVE-2025-43509 Information disclosure in macOS

What is CVE-2025-43509?

CVE-2025-43509 is a medium-severity vulnerability in Apple Macos, published on 12 Dec 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-200

Which versions are affected by CVE-2025-43509?

It affects 1 product.

Products include Apple Macos.

How do I fix CVE-2025-43509?

No fix has been published for CVE-2025-43509 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-43509 being exploited?

There is no known exploitation of CVE-2025-43509 in the wild and no public exploit code.

Other vulnerabilities in Apple Macos

• CVE-2026-65400 Apple macOS Improper Authentication Exploited Critical 9.8
• CVE-2024-44146 Security feature bypass in macOS Critical 10.0
• CVE-2024-44148 Security feature bypass in macOS Critical 10.0
• CVE-2023-38586 Security feature bypass in macOS Critical 10.0
• CVE-2023-40455 Security feature bypass in macOS Critical 10.0

All Apple Macos vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6239-3m7f-2j6j.