CVE-2020-27920

Name: CVE-2020-27920
Creator: NVD / NIST
Published: 2021-04-02T18:15:15.637+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.29%

Last modified Jun 17, 2026

CVE-2020-27920 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1, iOS 14.2 and iPadOS 14.2, watchOS 7.1, tvOS 14.2. EPSS estimates a 1.29% chance of exploitation in the next 30 days.

Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, macOS Big Sur 11.0.1, iOS 14.2 and iPadOS 14.2, watchOS 7.1, tvOS 14.2. Processing maliciously crafted web content may lead to code execution.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.29%

66.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	< 11.0.1
Apple	Ipados	< 14.2
Apple	Iphone Os	< 14.2
Apple	Mac Os X	< 11.1.0
Apple	Tvos	< 14.2
Apple	Watchos	< 7.1

References

https://support.apple.com/en-us/HT211928Vendor Advisory
https://support.apple.com/en-us/HT211929Vendor Advisory
https://support.apple.com/en-us/HT211930Vendor Advisory
https://support.apple.com/en-us/HT211931Vendor Advisory
https://support.apple.com/en-us/HT212011Vendor Advisory
https://support.apple.com/en-us/HT211928Vendor Advisory
https://support.apple.com/en-us/HT211929Vendor Advisory
https://support.apple.com/en-us/HT211930Vendor Advisory
https://support.apple.com/en-us/HT211931Vendor Advisory
https://support.apple.com/en-us/HT212011Vendor Advisory

Timeline

Published: Apr 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27920?

How severe is CVE-2020-27920?

CVE-2020-27920 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27920?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-27920?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST