CVE-2020-3856

Description

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. Processing a maliciously crafted string may lead to heap corruption.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.35%
Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com
Affected: Apple iOS
Affected: Apple macOS
Affected: Apple tvOS
Affected: Apple watchOS
Published at:
Updated at:

References

Link Tags
https://support.apple.com/HT210919 release notes vendor advisory
https://support.apple.com/HT210918 release notes vendor advisory
https://support.apple.com/HT210921 release notes vendor advisory
https://support.apple.com/HT210920 release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-3856?
CVE-2020-3856 has been scored as a high severity vulnerability.
How to fix CVE-2020-3856?
To fix CVE-2020-3856, 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-2020-3856 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-3856 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-3856?
CVE-2020-3856 affects Apple iOS, Apple macOS, Apple tvOS, Apple watchOS.
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