CVE-2020-10143: Macrium Reflect

High severity, CVSS 7.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Macrium Reflect includes an OpenSSL component that specifies an OPENSSLDIR variable as C:\openssl\. Macrium Reflect contains a privileged service that uses this OpenSSL component. Because unprivileged Windows users can create subdirectories off of the system root, a user can create the appropriate path to a specially-crafted openssl.cnf file to achieve arbitrary code execution with SYSTEM privileges.

Affected products

• Macrium Reflect: before 7.3.5281 (fixed in 7.3.5281)

Published 2020-12-09. Last modified 2026-06-17.