What is CVE-2025-43522?

CVE-2025-43522 is a low-severity vulnerability in Apple macOS, classified under Improper Verification of Cryptographic Signature. CVSS score: 3.3/10. Published 2025-12-12.

How severe is CVE-2025-43522?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Apple macOS

CVE-2025-43522

A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.3, macOS Tahoe 26.2. An app may be able to access user-sensitive data.

Published 2025-12-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 1.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Apple macOS — versions 0

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

support.apple.com/en-us/125886
support.apple.com/en-us/125887 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2025-43522?: CVE-2025-43522 is a low-severity vulnerability in Apple macOS, classified under Improper Verification of Cryptographic Signature. CVSS score: 3.3/10. Published 2025-12-12.
How severe is CVE-2025-43522?: Low severity. CVSS v3 base score is 3.3 out of 10.