Improper Certificate Validation in Siemens products - CVE-2020-36478
Published: September 16, 2021
Vulnerability identifier: #VU56657
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-36478
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to improper certificate validation. A remote attacker can perform a man-in-the-middle (MitM) attack.
Affected software
SIMATIC RTU 3000
LOGO! CMR2020
LOGO! CMR2040
LOGO! CMR2020
LOGO! CMR2040
How to mitigate CVE-2020-36478
Install updates from vendor's website.
LOGO! CMR2020 - update to 2.2
LOGO! CMR2040 - update to 2.2
LOGO! CMR2040 - update to 2.2