CVE-2020-10143
Macrium Reflect includes an OpenSSL component that specifies an OPENSSLDIR variable as C:\openssl...
CVE-2020-10143 is a high vulnerability (CVSS 7.8) in Macrium Reflect, published December 9, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.64%, the 50th percentile. No source names a fixed version.
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2020-10143- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2020-2606
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.
- Record
EUVD-2020-2606- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-7r93-vjf4-cwc6 No score
Macrium Reflect includes an OpenSSL component that specifies an OPENSSLDIR variable as C:\openssl...
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.
- Record
GHSA-7r93-vjf4-cwc6- Weakness
- CWE-269, CWE-665
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2020-10143- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.2 High
AV:L/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-284, CWE-665
- Updated
- 2026-11-02
Affected products
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD |