CVE-2021-30733

moderate-risk
Published 2021-09-08

An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave, macOS Big Sur 11.4, watchOS 7.5. Processing a maliciously crafted font may result in the disclosure of process memory.

Do I need to act?

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0.33% 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
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (20)

Affected Vendors

Apple

References (12)

Vendor Advisory https://support.apple.com/en-us/HT212528
Vendor Advisory https://support.apple.com/en-us/HT212529
Vendor Advisory https://support.apple.com/en-us/HT212532
Vendor Advisory https://support.apple.com/en-us/HT212533
Vendor Advisory https://support.apple.com/en-us/HT212600
Vendor Advisory https://support.apple.com/en-us/HT212603
Vendor Advisory https://support.apple.com/en-us/HT212528
Vendor Advisory https://support.apple.com/en-us/HT212529
Vendor Advisory https://support.apple.com/en-us/HT212532
Vendor Advisory https://support.apple.com/en-us/HT212533
Vendor Advisory https://support.apple.com/en-us/HT212600
Vendor Advisory https://support.apple.com/en-us/HT212603
44
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 25/34 · High