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CVE-2021-1818

9.8 · CRITICAL

A logic issue was addressed with improved state management.

Published Apr 2, 2021EPSS 2.96%

Overview

CVE-2021-1818 is a critical-severity vulnerability. It was published on April 2, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause unexpected application termination or arbitrary code execution.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refsupport.apple.com/en-us/HT212146Refsupport.apple.com/en-us/HT212147Refsupport.apple.com/en-us/HT212148Refsupport.apple.com/en-us/HT212149Refsupport.apple.com/en-us/HT212146Refsupport.apple.com/en-us/HT212147Refsupport.apple.com/en-us/HT212148Refsupport.apple.com/en-us/HT212149

How CyberStrike helps

Frequently asked questions

What is CVE-2021-1818?

CVE-2021-1818 is a critical-severity vulnerability. It was published on April 2, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2021-1818?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-1818?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-1818?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-1818 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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