High 8.8Published Apr 2, 2021

CVE-2020-27920A use after free issue was addressed with improved memory management.

Updated under an hour ago (Nov 2, 2026, 1:40 AM ET)

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It affects apple mac_os_x and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Start free and add your stackFree account, 3 products Every CVE for apple mac_os_x Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

apple mac_os_x apple:mac_os_x	before 11.0.1; before 11.1.0	NVD
apple ipados apple:ipados	before 14.2	NVD
apple iphone_os apple:iphone_os	before 14.2	NVD
apple tvos apple:tvos	before 14.2	NVD
apple watchos apple:watchos	before 7.1	NVD

References

References

https://support.apple.com/en-us/HT211928	vendor-advisory
https://support.apple.com/en-us/HT211929	vendor-advisory
https://support.apple.com/en-us/HT211930	vendor-advisory
https://support.apple.com/en-us/HT211931	vendor-advisory
https://support.apple.com/en-us/HT212011	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.