Vulnerability CVE-2019-16871
Published: 2019-12-19

Description:
Beckhoff Embedded Windows PLCs through 3.1.4024.0, and Beckhoff Twincat on Windows Engineering stations, allow an attacker to achieve Remote Code Execution (as SYSTEM) via the Beckhoff ADS protocol.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9.3/10
10/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Beckhoff -> Twincat 

 References:
https://download.beckhoff.com/download/document/product-security/Advisories/advisory-2017-001.pdf
https://www.ic4.be/2019/12/18/beckhoff-cve-2019-16871/#more-648
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