What is CVE-2025-43219?

CVE-2025-43219 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-04-02.

How severe is CVE-2025-43219?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Apple macOS

CVE-2025-43219

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.6. Processing a maliciously crafted image may corrupt process memory.

Vulnerability class: Buffer Overflow

Published 2026-04-02 · last modified 2026-07-20.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.6th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Apple macOS — versions 0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

support.apple.com/en-us/124149 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2025-43219?: CVE-2025-43219 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-04-02.
How severe is CVE-2025-43219?: High severity. CVSS v3 base score is 8.8 out of 10.