CVE-2021-30759

Description

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.05% Top 25%
Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com
Affected: Apple Security Update - Catalina
Affected: Apple iOS
Affected: Apple macOS
Affected: Apple macOS
Affected: Apple macOS
Affected: Apple macOS
Published at:
Updated at:

References

Link Tags
https://support.apple.com/en-us/HT212601 vendor advisory
https://support.apple.com/en-us/HT212602 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/HT212603 vendor advisory
https://support.apple.com/en-us/HT212604 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-30759?
CVE-2021-30759 has been scored as a high severity vulnerability.
How to fix CVE-2021-30759?
To fix CVE-2021-30759, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-30759 being actively exploited in the wild?
It is possible that CVE-2021-30759 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-30759?
CVE-2021-30759 affects Apple Security Update - Catalina, Apple iOS, Apple macOS, Apple macOS, Apple macOS, Apple macOS.
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