Vulnerability Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. Processing a maliciously crafted image may result in disclosure of process memory.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 18.7.5 |
| Apple | Iphone Os | < 18.7.5 |
| Apple | Macos | >= 14.0, < 14.8.4 |
| Apple | Tvos | < 26.3 |
| Apple | Visionos | < 26.3 |
| Apple | Watchos | < 26.3 |
References
- https://support.apple.com/en-us/126346Release NotesVendor Advisory
- https://support.apple.com/en-us/126347Release NotesVendor Advisory
- https://support.apple.com/en-us/126348Release NotesVendor Advisory
- https://support.apple.com/en-us/126349Release NotesVendor Advisory
- https://support.apple.com/en-us/126350Release NotesVendor Advisory
- https://support.apple.com/en-us/126351Release NotesVendor Advisory
- https://support.apple.com/en-us/126352Release NotesVendor Advisory
- https://support.apple.com/en-us/126353Release NotesVendor Advisory
FAQ
What is CVE-2026-20634?
CVE-2026-20634 is a vulnerability with a CVSS score of 5.5 (MEDIUM). The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS ...
How severe is CVE-2026-20634?
CVE-2026-20634 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-20634?
Check the references section above for vendor advisories and patch information. Affected products include: Apple Ipados, Apple Iphone Os, Apple Macos, Apple Tvos, Apple Visionos.