CVE-2021-30789

moderate-risk
Published 2021-09-08

An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-004 Catalina. Processing a maliciously crafted font file may lead to arbitrary code execution.

Do I need to act?

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0.62% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (14)

Affected Vendors

Apple

References (10)

Vendor Advisory https://support.apple.com/en-us/HT212600
Vendor Advisory https://support.apple.com/en-us/HT212601
Vendor Advisory https://support.apple.com/en-us/HT212602
Vendor Advisory https://support.apple.com/en-us/HT212604
Vendor Advisory https://support.apple.com/en-us/HT212605
Vendor Advisory https://support.apple.com/en-us/HT212600
Vendor Advisory https://support.apple.com/en-us/HT212601
Vendor Advisory https://support.apple.com/en-us/HT212602
Vendor Advisory https://support.apple.com/en-us/HT212604
Vendor Advisory https://support.apple.com/en-us/HT212605
44
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 2/34 · Minimal
Exposure 18/34 · Moderate