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CVE-2020-9819

4.3 · MEDIUMActively Exploited

A memory consumption issue was addressed with improved memory handling.

Published Jun 9, 2020CWE-787EPSS 2.18%

Overview

CVE-2020-9819 is a medium-severity vulnerability. It was published on June 9, 2020 and has a CVSS 3.1 base score of 4.3 (MEDIUM). 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 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5 and iPadOS 13.5, iOS 12.4.7, watchOS 6.2.5, watchOS 5.3.7. Processing a maliciously crafted mail message may lead to heap corruption.

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/HT211168Refsupport.apple.com/HT211169Refsupport.apple.com/HT211175Refsupport.apple.com/HT211176Refsupport.apple.com/HT211168Refsupport.apple.com/HT211169Refsupport.apple.com/HT211175Refsupport.apple.com/HT211176CISAwww.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9819

How CyberStrike helps

Frequently asked questions

What is CVE-2020-9819?

CVE-2020-9819 is a medium-severity vulnerability. It was published on June 9, 2020 and has a CVSS 3.1 base score of 4.3 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2020-9819?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-9819?

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-2020-9819?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-9819 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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