Vulnerability Description
A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate certificate authority may be able to issue certificates with arbitrary extended key usages.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 26.7 |
| Apple | Iphone Os | < 26.7 |
| Apple | Macos | >= 15.0, < 15.8 |
| Apple | Tvos | < 27.0 |
| Apple | Visionos | < 27.0 |
| Apple | Watchos | < 27.0 |
Related Weaknesses (CWE)
References
- https://support.apple.com/en-us/149034Release NotesVendor Advisory
- https://support.apple.com/en-us/149035Release NotesVendor Advisory
- https://support.apple.com/en-us/149036Release NotesVendor Advisory
- https://support.apple.com/en-us/149037Release NotesVendor Advisory
- https://support.apple.com/en-us/149038Release NotesVendor Advisory
- https://support.apple.com/en-us/149041Release NotesVendor Advisory
- https://support.apple.com/en-us/149042Release NotesVendor Advisory
- https://support.apple.com/en-us/149043Release NotesVendor Advisory
FAQ
What is CVE-2026-86881?
CVE-2026-86881 is a vulnerability with a CVSS score of 9.1 (CRITICAL). A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macO...
How severe is CVE-2026-86881?
CVE-2026-86881 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-86881?
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.