CVE-2021-1844

Description

A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 14.4.1 and iPadOS 14.4.1, Safari 14.0.3 (v. 14610.4.3.1.7 and 15610.4.3.1.7), watchOS 7.3.2, macOS Big Sur 11.2.3. Processing maliciously crafted web content may lead to arbitrary code execution.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.61%
Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com
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/HT212220 vendor advisory
https://support.apple.com/en-us/HT212221 vendor advisory
https://support.apple.com/en-us/HT212222 vendor advisory
https://support.apple.com/en-us/HT212223 vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/ vendor advisory
https://support.apple.com/kb/HT212323 vendor advisory
http://seclists.org/fulldisclosure/2021/Apr/55 third party advisory mailing list
https://www.debian.org/security/2021/dsa-4923 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-1844?
CVE-2021-1844 has been scored as a high severity vulnerability.
How to fix CVE-2021-1844?
To fix CVE-2021-1844, 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-2021-1844 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-1844 is being actively exploited. 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-2021-1844?
CVE-2021-1844 affects Apple macOS, Apple macOS, Apple macOS, Apple macOS.
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