CVE-2026-86881

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-86881
StatePUBLISHED
Assignerapple
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-14 21:17:39 UTC
Updated2026-09-16 18:25:22 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.001450000 probability, percentile 0.041330000 (date 2026-09-15)

Problem Types: CWE-295 | An attacker with a compromised intermediate certificate authority may be able to issue certificates with arbitrary extended key usages | CWE-295 CWE-295 Improper Certificate Validation

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Ipados All All All All
Operating System Apple Iphone Os All All All All
Operating System Apple Macos All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apple IOS And IPadOS affected 26.7 custom Not specified
CNA Apple IOS And IPadOS affected 27 custom Not specified
CNA Apple MacOS affected 15.8 custom Not specified
CNA Apple MacOS affected 26.7 custom Not specified
CNA Apple MacOS affected 27 custom Not specified
CNA Apple TvOS affected 27 custom Not specified
CNA Apple VisionOS affected 27 custom Not specified
CNA Apple WatchOS affected 27 custom Not specified

References

ReferenceSourceLinkTags
support.apple.com/en-us/149035 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/149038 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/149037 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/149042 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/149043 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/149036 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/149034 [email protected] support.apple.com Release Notes, Vendor Advisory
support.apple.com/en-us/149041 [email protected] support.apple.com Release Notes, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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