CVE-2026-28859

Name: CVE-2026-28859
Creator: NVD / NIST
Published: 2026-03-25T01:17:10.023+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2026-28859 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. A malicious website may be able to process restricted web content outside the sandbox.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.44%

34.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Apple	Safari	< 26.4
Apple	Ipados	< 26.4
Apple	Iphone Os	< 26.4
Apple	Macos	< 26.4
Apple	Tvos	< 26.4
Apple	Visionos	< 26.4
Apple	Watchos	< 26.4

References

https://support.apple.com/en-us/126792Release Notes, Vendor Advisory
https://support.apple.com/en-us/126794Release Notes, Vendor Advisory
https://support.apple.com/en-us/126797Release Notes, Vendor Advisory
https://support.apple.com/en-us/126798Release Notes, Vendor Advisory
https://support.apple.com/en-us/126799Release Notes, Vendor Advisory
https://support.apple.com/en-us/126800Release Notes, Vendor Advisory

Timeline

Published: Mar 25, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-28859?

How severe is CVE-2026-28859?

CVE-2026-28859 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2026-28859?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-28859?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST