A vulnerability has been identified in SIMATIC S7-400 (incl. F)...

7.5 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Siemens AG

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Affected Software

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

Vulnerable Versions:

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