cpe:/o:siemens:simatic_s7-400_firmware:4.0 cpe:/o:siemens:simatic_s7-400h_firmware:4.5 CVE-2018-4850 2018-05-16T13:29:00.387-04:00 2019-10-09T19:41:02.360-04:00 5.0 NETWORK LOW NONE NONE NONE PARTIAL http://nvd.nist.gov BID 104217 CONFIRM https://cert-portal.siemens.com/productcert/pdf/ssa-914382.pdf CONFIRM https://www.siemens.com/global/en/home/products/services/cert.html#SecurityPublications 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.