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Vulnerability DatabaseCVE-2021-30855

CVE-2021-30855: 
macOS vulnerability analysis and mitigation

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, iOS 15 and iPadOS 15, watchOS 8, macOS Big Sur 11.6. An application may be able to access restricted files.

Source: NVD

Related macOS vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-64775CRITICAL9.8
  • macOS logomacOS
  • Kernel
NoYesJul 27, 2026
CVE-2026-64774CRITICAL9.8
  • macOS logomacOS
  • Model I/O
NoYesJul 27, 2026
CVE-2026-64783HIGH8.8
  • Apple Safari logoApple Safari
  • WebKit
NoYesJul 27, 2026
CVE-2026-65400HIGH7.1
  • macOS logomacOS
  • Screen Sharing
NoYesAug 06, 2026
CVE-2026-64776MEDIUM5.5
  • macOS logomacOS
  • Disk Images
NoYesJul 27, 2026

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