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HIGH · 7.5

CVE-2020-25241

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 ...

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
SiemensSimatic Mv440 Sr Firmware< 7.0.6
SiemensSimatic Mv440 Sr-
SiemensSimatic Mv440 Hr Firmware< 7.0.6
SiemensSimatic Mv440 Hr-
SiemensSimatic Mv440 Ur Firmware< 7.0.6
SiemensSimatic Mv440 Ur-
SiemensSimatic Mv420 Sr-B Firmware< 7.0.6
SiemensSimatic Mv420 Sr-B-
SiemensSimatic Mv420 Sr-P Firmware< 7.0.6
SiemensSimatic Mv420 Sr-P-
SiemensSimatic Mv420 Sr-B Body Firmware< 7.0.6
SiemensSimatic Mv420 Sr-B Body-
SiemensSimatic Mv420 Sr-P Body Firmware< 7.0.6
SiemensSimatic Mv420 Sr-P Body-

Related Weaknesses (CWE)

CWE-1285CWE-129

References

FAQ

What is CVE-2020-25241?

CVE-2020-25241 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...

How severe is CVE-2020-25241?

CVE-2020-25241 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-25241?

Check the references section above for vendor advisories and patch information. Affected products include: Siemens Simatic Mv440 Sr Firmware, Siemens Simatic Mv440 Sr, Siemens Simatic Mv440 Hr Firmware, Siemens Simatic Mv440 Hr, Siemens Simatic Mv440 Ur Firmware.