What’s Vulnerable › Vulnerabilities

CVE-2021-30935

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-24 · updated 2026-06-17

Description

A logic issue was addressed with improved validation. This issue is fixed in Security Update 2021-008 Catalina, macOS Big Sur 11.6.2. An application may be able to execute arbitrary code with kernel privileges.

Affected products

• macOS: through 10.15.7; 10.15.7-security_update_2020-001, 10.15.7-security_update_2020-005, 10.15.7-security_update_2020-007, 10.15.7-security_update_2021-001, 10.15.7-security_update_2021-002, 10.15.7-security_update_2021-003 (+5)
• Apple macOS: from 11.0 before 11.6.2; from 12.0 before 12.1 — fixed in 11.6.2, 12.1

How to fix

Upgrade to a fixed version: Apple macOS 11.6.2, 12.1. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT212979
• https://support.apple.com/en-us/HT212981
• https://support.apple.com/kb/HT212978
• https://support.apple.com/en-us/HT212979
• https://support.apple.com/en-us/HT212981
• https://support.apple.com/kb/HT212978

Get alerted when CVE-2021-30935 or the next vulnerability affects your stack