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7.8

CVE-2020-3886: A use after free issue was addressed with improved memory management. This issue is fixed in macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra. A malicio...

CVE-2020-3886 · published 4 years ago
Summary

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra. A malicious application may be able to execute arbitrary code with kernel privileges.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
apple mac_os_x >= 10.13, < 10.13.6
>= 10.14, < 10.14.6
>= 10.15, < 10.15.4
10.13.6
10.14.6
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
Original advisory text
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra. A malicio...
A use after free issue was addressed with improved memory management. This issue is fixed in macOS Catalina 10.15.4, Security Update 2020-002 Mojave, Security Update 2020-002 High Sierra. A malicious application may be able to execute arbitrary code with kernel privileges.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
7.8 High
Exploitation
<1% chance of attack within 30 days
Type
CWE-416Use After Free
Timeline
Published23 Dec 2021
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2020-3886 · NVD
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