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7.8

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.6. An application may be able to execute arbitrary code with kernel privileges.

CVE-2020-9899 · published 6 years ago
Summary

A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.6. An application may be able to execute arbitrary code with kernel privileges.

What to do
  • Update apple mac_os_x to version 10.15.6 or later.
Affected software
VendorProductAffected versions
apple mac_os_x >= 10.13.6, < 10.15.6
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
Original advisory text
A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.6. An application may be able to execute arbitrary code with kernel privileges.
A memory corruption issue was addressed with improved input validation. This issue is fixed in macOS Catalina 10.15.6. An 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-787Out-of-bounds Write
Timeline
Published22 Oct 2020
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2020-9899 · NVD
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