macOS
CVE-2026-20648
MEDIUM
Severity by source
AV:L/AC:L/PR:N/UI:R/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:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionCVE.org
A privacy issue was addressed by moving sensitive data to a protected location. This issue is fixed in macOS Tahoe 26.3. A malicious app may be able to access notifications from other iCloud devices.
AnalysisAI
Malicious applications on macOS can intercept and read notifications synced from other iCloud-connected devices due to improper access controls on notification data. This local privilege escalation affects macOS versions prior to Tahoe 26.3 and requires user interaction to execute the malicious app. An attacker with local access could gain unauthorized visibility into private notifications and communications across a user's device ecosystem.
Technical ContextAI
Classified as CWE-200 (Information Exposure). Affects Macos. A privacy issue was addressed by moving sensitive data to a protected location. This issue is fixed in macOS Tahoe 26.3. A malicious app may be able to access notifications from other iCloud devices.
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-200 – Information Exposure
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External POC / Exploit Code
Leaving vuln.today