CVE-2026-86881

CRITICAL 9.1CVE-2026-86881 · Published 14/09/2026 · updated 16/09/2026

In short

CVE-2026-86881 is a CRITICAL (CVSS 9.1) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.40%, higher than 34.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

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.

References

support.apple.com/en-us/149034 · Release Notes
support.apple.com/en-us/149035 · Release Notes
support.apple.com/en-us/149036 · Release Notes
support.apple.com/en-us/149037 · Release Notes
support.apple.com/en-us/149038 · Release Notes
support.apple.com/en-us/149041 · Release Notes
support.apple.com/en-us/149042 · Release Notes
support.apple.com/en-us/149043 · Release Notes

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