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macOS CVE-2026-20670

| EUVDEUVD-2026-15055 MEDIUM
2026-03-25 apple GHSA-6hg7-v5xr-46g2
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Patch available
Apr 16, 2026 - 05:29 EUVD
26.3,14.8.4
EUVD ID Assigned
Mar 25, 2026 - 01:00 euvd
EUVD-2026-15055
Analysis Generated
Mar 25, 2026 - 01:00 vuln.today
CVE Published
Mar 25, 2026 - 00:31 nvd
MEDIUM 5.5

DescriptionCVE.org

An authorization issue was addressed with improved state management. This issue is fixed in macOS Sonoma 14.8.4, macOS Tahoe 26.3. An app may be able to access sensitive user data.

AnalysisAI

An authorization bypass vulnerability in macOS allows applications to access sensitive user data through improper state management. The vulnerability affects macOS Sonoma 14.8.4 and earlier versions, as well as macOS Tahoe 26.3 and earlier, enabling unprivileged apps to circumvent authorization checks and obtain restricted user information. Apple has addressed this issue through patched releases, and no public exploitation activity or proof-of-concept code has been reported at this time.

Technical ContextAI

This vulnerability stems from insufficient state management in macOS authorization controls, classified as an information disclosure issue. The root cause involves authorization state not being properly validated or maintained during application execution, allowing apps to retain or escalate access to sensitive user data beyond their granted permissions. Affected products include the complete macOS platform (CPE: cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:*), indicating the vulnerability exists in core operating system authorization mechanisms rather than a specific application component. The flaw represents a breach of the principle of least privilege in macOS's security model, where application sandbox and entitlement-based access controls have been bypassed due to state management weaknesses.

RemediationAI

Users should immediately upgrade to macOS Sonoma 14.8.4 or later, or macOS Tahoe 26.3 or later, depending on their current OS version. The patches can be downloaded and installed through System Settings > General > Software Update, or by visiting https://support.apple.com/en-us/126348 and https://support.apple.com/en-us/126350 for manual download options. For organizations unable to immediately patch, implement restrictive application allowlisting policies to limit which apps can execute, monitor system logs for suspicious data access patterns, and consider restricting user account privileges to standard (non-administrator) accounts where feasible. Additionally, review installed applications and disable those not essential to business operations, as this reduces the attack surface for malicious apps attempting to exploit the authorization bypass.

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CVE-2026-20670 vulnerability details – vuln.today

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