CVE-2021-30759

high-risk
Published 2021-09-08

A stack overflow 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 2021-005 Mojave, Security Update 2021-004 Catalina. Processing a maliciously crafted font file may lead to arbitrary code execution.

Do I need to act?

~
1.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
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 (20)

Affected Vendors

Apple

References (12)

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/HT212603
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/HT212603
Vendor Advisory https://support.apple.com/en-us/HT212604
Vendor Advisory https://support.apple.com/en-us/HT212605
52
/ 100
high-risk
Severity 24/34 · High
Exploitability 3/34 · Minimal
Exposure 25/34 · High