High severity7.5NVD Advisory· Published Mar 15, 2021· Updated Jun 17, 2026
CVE-2020-25241
CVE-2020-25241
Description
A vulnerability has been identified in SIMATIC MV400 family (All Versions < V7.0.6). The underlying TCP stack of the affected products does not correctly validate the sequence number for incoming TCP RST packages. An attacker could exploit this to terminate arbitrary TCP sessions.
Affected products
9- Range: < V7.0.6
- Range: All Versions < V7.0.6
- cpe:2.3:o:siemens:simatic_mv440_sr_firmware:*:*:*:*:*:*:*:*Range: <7.0.6
- cpe:2.3:o:siemens:simatic_mv440_hr_firmware:*:*:*:*:*:*:*:*Range: <7.0.6
- cpe:2.3:o:siemens:simatic_mv440_ur_firmware:*:*:*:*:*:*:*:*Range: <7.0.6
- cpe:2.3:o:siemens:simatic_mv420_sr-b_firmware:*:*:*:*:*:*:*:*Range: <7.0.6
- cpe:2.3:o:siemens:simatic_mv420_sr-p_firmware:*:*:*:*:*:*:*:*Range: <7.0.6
- cpe:2.3:o:siemens:simatic_mv420_sr-b_body_firmware:*:*:*:*:*:*:*:*Range: <7.0.6
- cpe:2.3:o:siemens:simatic_mv420_sr-p_body_firmware:*:*:*:*:*:*:*:*Range: <7.0.6
Patches
Vulnerability mechanics
References
1- cert-portal.siemens.com/productcert/pdf/ssa-599268.pdfnvdVendor Advisory
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