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7.8

macOS Catalina could let app run code as system

CVE-2019-8807 · published 6 years ago
Summary

The macOS Catalina 10.15.1 operating system had a flaw in how it handled memory, which could allow a malicious application to run its own code with full system privileges. This could let an attacker take control of the computer. The issue has been fixed in the 10.15.1 update, so applying the latest macOS updates resolves the risk.

What to do
  • Update apple mac_os_x to version 10.15.1 or later.
Affected software
VendorProductAffected versions
apple mac_os_x < 10.15.1
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
Original advisory text
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.1. An application may be able to execute arbitrary code with system privileges.
A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.1. An application may be able to execute arbitrary code with system 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
Published18 Dec 2019
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2019-8807 · NVD
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