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, visionOS 26.4. Processing maliciously crafted web content may lead to an unexpected process crash.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Safari | < 26.4 |
| Apple | Ipados | < 26.4 |
| Apple | Iphone Os | < 26.4 |
| Apple | Macos | >= 26.0, < 26.4 |
| Apple | Visionos | < 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/126799Release NotesVendor Advisory
- https://support.apple.com/en-us/126800Release NotesVendor Advisory
FAQ
What is CVE-2026-20664?
CVE-2026-20664 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, visionOS 26.4. Processing maliciously crafted web content may lea...
How severe is CVE-2026-20664?
CVE-2026-20664 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-2026-20664?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Safari, Apple Ipados, Apple Iphone Os, Apple Macos, Apple Visionos.