CVE-2021-30807

high-risk
Published 2021-10-19

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.5.1, iOS 14.7.1 and iPadOS 14.7.1, watchOS 7.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited.

Do I need to act?

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24.5% chance of exploitation in next 30 days
EPSS score — higher than 76% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (4)

Affected Vendors

Apple

References (7)

Release Notes https://support.apple.com/en-us/HT212622
Release Notes https://support.apple.com/en-us/HT212623
Release Notes https://support.apple.com/en-us/HT212713
Release Notes https://support.apple.com/en-us/HT212622
Release Notes https://support.apple.com/en-us/HT212623
Release Notes https://support.apple.com/en-us/HT212713
Third Party Advisory https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
56
/ 100
high-risk
Severity 24/34 · High
Exploitability 22/34 · High
Exposure 10/34 · Low