Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| 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 |
Related Weaknesses (CWE)
References
- https://support.apple.com/en-us/126792Release NotesVendor Advisory
- https://support.apple.com/en-us/126794Release NotesVendor Advisory
- https://support.apple.com/en-us/126797Release NotesVendor Advisory
- https://support.apple.com/en-us/126798Release NotesVendor Advisory
- https://support.apple.com/en-us/126799Release NotesVendor Advisory
- https://support.apple.com/en-us/126800Release NotesVendor Advisory
FAQ
What is CVE-2026-28859?
CVE-2026-28859 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 b...
How severe is CVE-2026-28859?
CVE-2026-28859 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-28859?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Safari, Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos.