What’s Vulnerable › Vulnerabilities

CVE-2021-30811

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-19 · updated 2026-06-17

Description

This issue was addressed with improved checks. This issue is fixed in iOS 15 and iPadOS 15, watchOS 8. A local attacker may be able to read sensitive information.

Affected products

• Apple iPadOS: before 15.0 — fixed in 15.0
• Apple Iphone Os: before 15.0 — fixed in 15.0
• macOS: from 10.14.0 before 10.14.6; from 10.15 before 10.15.7; 10.14.6, 10.14.6-security_update_2019-001, 10.14.6-security_update_2019-002, 10.14.6-security_update_2019-004, 10.14.6-security_update_2019-005, 10.14.6-security_update_2019-006 (+23) — fixed in 10.14.6, 10.15.7
• Apple macOS: before 11.6 — fixed in 11.6
• Apple watchOS: before 8.0 — fixed in 8.0

How to fix

Upgrade to a fixed version: Apple iPadOS 15.0; Apple Iphone Os 15.0; macOS 10.14.6, 10.15.7; Apple macOS 11.6; Apple watchOS 8.0. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2021/Oct/61
• http://seclists.org/fulldisclosure/2021/Oct/62
• https://support.apple.com/en-us/HT212814
• https://support.apple.com/en-us/HT212819
• https://support.apple.com/kb/HT212600
• https://support.apple.com/kb/HT212603
• https://support.apple.com/kb/HT212804
• http://seclists.org/fulldisclosure/2021/Oct/61
• http://seclists.org/fulldisclosure/2021/Oct/62
• https://support.apple.com/en-us/HT212814
• https://support.apple.com/en-us/HT212819
• https://support.apple.com/kb/HT212600

Get alerted when CVE-2021-30811 or the next vulnerability affects your stack