Vulnerability Details CVE-2018-4850
A vulnerability has been identified in SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below (All versions), SIMATIC S7-400 (incl. F) CPU hardware version 5.0 (All firmware versions < V5.2), SIMATIC S7-400H CPU hardware version 4.5 and below (All versions). The affected CPUs improperly validate S7 communication packets which could cause a Denial-of-Service condition of the CPU. The CPU will remain in DEFECT mode until manual restart.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 68.5%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- http://www.securityfocus.com/bid/104217
- https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf
- https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications
- http://www.securityfocus.com/bid/104217
- https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf
- https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications
Products affected by CVE-2018-4850
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cpe:2.3:h:siemens:simatic_s7-400:-
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cpe:2.3:h:siemens:simatic_s7-400h:-
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cpe:2.3:o:siemens:simatic_s7-400_firmware:-
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cpe:2.3:o:siemens:simatic_s7-400_firmware:4.0
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cpe:2.3:o:siemens:simatic_s7-400h_firmware:4.5