description: 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.
problem types: CWE-20: Improper Input Validation
affected:
{
product: SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below, SIMATIC S7-400 (incl. F) CPU hardware version 5.0, SIMATIC S7-400H CPU hardware version 4.5 and below
vendor: Siemens AG
versions:
status: affected, version: SIMATIC S7-400 (incl. F) CPU hardware version 4.0 and below : All versions
status: affected, version: SIMATIC S7-400 (incl. F) CPU hardware version 5.0 : All firmware versions < V5.2
status: affected, version: SIMATIC S7-400H CPU hardware version 4.5 and below : All versions
}