macOS
CVE-2026-20666
MEDIUM
Severity by source
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
Lifecycle Timeline
2DescriptionCVE.org
An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.3. An app may be able to access sensitive user data.
AnalysisAI
Unauthorized access to sensitive user data in macOS can be achieved by local applications due to improper authorization state management affecting macOS Tahoe 26.2 and earlier. An attacker with local access and basic user privileges can exploit this flaw to read confidential information without user interaction. No patch is currently available for this vulnerability.
Technical ContextAI
Classified as CWE-285 (Improper Authorization). Affects Macos. An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.3. An app may be able to access sensitive user data.
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-285 – Improper Authorization
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External POC / Exploit Code
Leaving vuln.today