Vulnerability Description
An out-of-bounds access issue was addressed with improved bounds checking. 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 media file may lead to unexpected app termination or corrupt process memory.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 18.7.5 |
| Apple | Iphone Os | < 18.7.5 |
| Apple | Macos | < 14.8.4 |
| Apple | Tvos | < 26.3 |
| Apple | Visionos | < 26.3 |
| Apple | Watchos | < 26.3 |
Related Weaknesses (CWE)
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
- https://www.zerodayinitiative.com/advisories/ZDI-26-173/
FAQ
What is CVE-2026-20611?
CVE-2026-20611 is a vulnerability with a CVSS score of 7.8 (HIGH). An out-of-bounds access issue was addressed with improved bounds checking. 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, mac...
How severe is CVE-2026-20611?
CVE-2026-20611 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-20611?
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.