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CVE-2020-27932

7.8 · HIGHActively Exploited

A type confusion issue was addressed with improved state handling.

Published Dec 8, 2020CWE-843EPSS 10.34%

Overview

CVE-2020-27932 is a high-severity vulnerability. It was published on December 8, 2020 and has a CVSS 3.1 base score of 7.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious application may be able to execute arbitrary code with kernel privileges.

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

Refpacketstormsecurity.com/files/161295/XNU-Kernel-Turnstiles-Type-Confusion.htmlRefseclists.org/fulldisclosure/2020/Dec/32Refsupport.apple.com/en-us/HT211928Refsupport.apple.com/en-us/HT211929Refsupport.apple.com/en-us/HT211931Refsupport.apple.com/en-us/HT211940Refsupport.apple.com/en-us/HT211944Refsupport.apple.com/en-us/HT211945Refsupport.apple.com/en-us/HT211946Refsupport.apple.com/en-us/HT211947

How CyberStrike helps

Frequently asked questions

What is CVE-2020-27932?

CVE-2020-27932 is a high-severity vulnerability. It was published on December 8, 2020 and has a CVSS 3.1 base score of 7.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2020-27932?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-27932?

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-2020-27932?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-27932 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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