Vulnerability Details CVE-2021-37172
A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (V4.5.0). Affected devices fail to authenticate against configured passwords when provisioned using TIA Portal V13. This could allow an attacker using TIA Portal V13 or later versions to bypass authentication and download arbitrary programs to the PLC. The vulnerability does not occur when TIA Portal V13 SP1 or any later version was used to provision the device.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 41.0%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
Products affected by CVE-2021-37172
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cpe:2.3:a:siemens:simatic_step_7_(tia_portal):10.0
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cpe:2.3:a:siemens:simatic_step_7_(tia_portal):11.0
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cpe:2.3:a:siemens:simatic_step_7_(tia_portal):12.0
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cpe:2.3:a:siemens:simatic_step_7_(tia_portal):13.0
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cpe:2.3:a:siemens:simatic_step_7_(tia_portal):5.0
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cpe:2.3:h:siemens:cpu_1211c:-
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cpe:2.3:h:siemens:cpu_1212c:-
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cpe:2.3:h:siemens:cpu_1212fc:-
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cpe:2.3:h:siemens:cpu_1214c:-
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cpe:2.3:h:siemens:cpu_1214fc:-
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cpe:2.3:h:siemens:cpu_1215c:-
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cpe:2.3:h:siemens:cpu_1215fc:-
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cpe:2.3:h:siemens:cpu_1217c:-
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cpe:2.3:o:siemens:simatic_s7-1200_cpu_firmware:4.5.0