What’s Vulnerable › Vulnerabilities

CVE-2021-30913

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-24 · updated 2026-06-17

Description

The issue was addressed with improved permissions logic. This issue is fixed in macOS Monterey 12.0.1, macOS Big Sur 11.6.1. An unprivileged application may be able to edit NVRAM variables.

Affected products

• macOS: from 10.15 before 10.15.7; 10.15.7, 10.15.7-security_update_2020, 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 (+4) — fixed in 10.15.7
• Apple macOS: from 11.0 before 11.6.1; 12.0 — fixed in 11.6.1

How to fix

Upgrade to a fixed version: macOS 10.15.7; Apple macOS 11.6.1. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT212869
• https://support.apple.com/en-us/HT212872
• https://support.apple.com/kb/HT212871
• https://support.apple.com/en-us/HT212869
• https://support.apple.com/en-us/HT212872
• https://support.apple.com/kb/HT212871

Get alerted when CVE-2021-30913 or the next vulnerability affects your stack