What’s Vulnerable › Vulnerabilities

CVE-2021-30853

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-24 · updated 2026-06-17
• Weakness: CWE-787

Description

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.6. A malicious application may bypass Gatekeeper checks.

Affected products

• Apple macOS: before 11.6 — fixed in 11.6

How to fix

Upgrade to a fixed version: Apple macOS 11.6. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT212804
• https://support.apple.com/en-us/HT212804

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