What is CVE-2026-28842?

CVE-2026-28842 is a high-severity vulnerability in Apple macOS, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-03-25.

How severe is CVE-2026-28842?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Apple macOS

CVE-2026-28842

The issue was addressed with improved bounds checks. This issue is fixed in macOS Tahoe 26.4. A buffer overflow may result in memory corruption and unexpected app termination.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (31.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apple Macos — versions 0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

product-security@apple.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-28842?: CVE-2026-28842 is a high-severity vulnerability in Apple macOS, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-03-25.
How severe is CVE-2026-28842?: High severity. CVSS v3 base score is 7.5 out of 10.