CVE-2021-30900

Known Exploited

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 14.8.1 and iPadOS 14.8.1, iOS 15.1 and iPadOS 15.1. A malicious application may be able to execute arbitrary code with kernel privileges.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.38% Top 25%
KEV Since 
Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com
Affected: Apple iOS and iPadOS
Affected: Apple iOS and iPadOS
Published at:
Updated at:

References

Link Tags
https://support.apple.com/kb/HT212872 vendor advisory
https://support.apple.com/en-us/HT212867 vendor advisory
https://support.apple.com/en-us/HT212868 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-30900?
CVE-2021-30900 has been scored as a high severity vulnerability.
How to fix CVE-2021-30900?
To fix CVE-2021-30900, 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-2021-30900 being actively exploited in the wild?
It is confirmed that CVE-2021-30900 is actively exploited. Be extra cautious if you are using vulnerable components. 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-2021-30900?
CVE-2021-30900 affects Apple iOS and iPadOS, Apple iOS and iPadOS.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.