CVE-2026-86907
Received Received - Intake

Authorization Issue in macOS Sequoia Allows System Keychain Modification

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Apple Inc.

Description
An authorization issue was addressed with improved entitlement checks. This issue is fixed in macOS Sequoia 15.8, macOS Tahoe 26.7. An app with admin privileges may be able to modify the System Keychain.

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Meta Information

Published
2026-10-20
Last Modified
2026-10-20
Generated
2026-10-20
AI Q&A
2026-10-20
EPSS Evaluated
N/A
NVD
CVE-2026-86907
EUVD
EUVD-2026-104714

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
Apple macOS 0
Apple macOS 0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is an authorization issue where an app with admin privileges could potentially modify the System Keychain due to insufficient entitlement checks. The vulnerability was addressed in macOS Sequoia 15.8 and macOS Tahoe 26.7.

Impact Analysis

An attacker with admin access could exploit this to modify the System Keychain, potentially gaining access to sensitive data like passwords or encryption keys stored there.

Mitigation Strategies

Update to macOS Sequoia 15.8 or macOS Tahoe 26.7 to address the authorization issue. Remove unnecessary admin privileges from apps to limit potential System Keychain modifications.

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