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5.5

macOS may let malicious app read other iCloud notifications

CVE-2026-20648 · published 8 months ago
Summary

On macOS versions before the latest updates, a flaw could let a malicious application view notification content from other iCloud‑linked devices. This could expose private information such as messages or alerts. Updating to the latest macOS release resolves the issue, so apply the newest software patches as soon as possible.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
apple macos < 26.3
< 15.8.2
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Original advisory text
A privacy issue was addressed by moving sensitive data to a protected location. This issue is fixed in macOS Sequoia 15.8.2, macOS Tahoe 26.3. A malicious app may be able to access notifications fr...
A privacy issue was addressed by moving sensitive data to a protected location. This issue is fixed in macOS Sequoia 15.8.2, macOS Tahoe 26.3. A malicious app may be able to access notifications from other iCloud devices.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
5.5 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-200Information Exposure
Timeline
Published11 Feb 2026
Updated4 Nov 2026
First seen6 Mar 2026
Sources
CVE-2026-20648 · NVD
CVE-2026-20648 · MITRE
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