What is CVE-2026-28819?

CVE-2026-28819 is a medium-severity vulnerability in Apple Ios And Ipados, classified under Out-of-bounds Write. CVSS score: 5.4/10. Published 2026-05-11.

How severe is CVE-2026-28819?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Buffer overflow in Apple Ios And Ipados

CVE-2026-28819

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. An app may be able to execute arbitrary code with k…

Vulnerability class: Buffer Overflow

EPSS: 0.001 (16.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

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)
product-security@apple.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28819?: CVE-2026-28819 is a medium-severity vulnerability in Apple Ios And Ipados, classified under Out-of-bounds Write. CVSS score: 5.4/10. Published 2026-05-11.
How severe is CVE-2026-28819?: Medium severity. CVSS v3 base score is 5.4 out of 10.