CVE-2026-28819

Description

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 kernel privileges.

CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0005

Probability of exploitation

0.16%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
apple	ipados	< 18.7.9
apple	iphone_os	< 18.7.9
apple	macos	14.0 — 14.8.7
apple	macos	15.0 — 15.7.7
apple	macos	26.0 — 26.5

References

Advisories & Patches

https://support.apple.com/en-us/127111 https://support.apple.com/en-us/127115 https://support.apple.com/en-us/127116 https://support.apple.com/en-us/127117

Frequently Asked Questions

What is 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 kernel privileges. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-28819? +

CVE-2026-28819 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0005, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-28819? +

CVE-2026-28819 affects products from apple, specifically: ipados, iphone_os, macos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-28819? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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