vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2020-25241

HIGH
7.5
CVSS Score
Published: March 15, 2021 at 05:03 PM UTC
Updated: June 17, 2026 at 03:06 AM UTC
15 products affected across 1 vendorSIMATIC MV440 Hr FirmwareSIMATIC MV420 Sr P FirmwareSIMATIC MV440 Sr Firmware

Using SIMATIC MV400 family by Siemens?

Get instant alerts when new vulnerabilities affect SIMATIC MV400 family - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7.5
Exploit prediction
EPSS 1%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

SIMATIC MV420 Sr B Body Firmware· Siemens
95%
v < 7.0.6
Affected range stops below 7.0.6, so it looks safe — our inference, not a vendor statement
siemens-simatic-mv420-sr-b-body (same device)
SIMATIC MV420 Sr B Firmware· Siemens
95%
v < 7.0.6
Affected range stops below 7.0.6, so it looks safe — our inference, not a vendor statement
siemens-simatic-mv420-sr-b (same device)
SIMATIC MV420 Sr P Body Firmware· Siemens
95%
v < 7.0.6
Affected range stops below 7.0.6, so it looks safe — our inference, not a vendor statement
siemens-simatic-mv420-sr-p-body (same device)
SIMATIC MV420 Sr P Firmware· Siemens
95%
v < 7.0.6
Affected range stops below 7.0.6, so it looks safe — our inference, not a vendor statement
siemens-simatic-mv420-sr-p (same device)
SIMATIC MV440 Hr Firmware· Siemens
95%
v < 7.0.6
Affected range stops below 7.0.6, so it looks safe — our inference, not a vendor statement
siemens-simatic-mv440-hr (same device)
SIMATIC MV440 Sr Firmware· Siemens
95%
v < 7.0.6
Affected range stops below 7.0.6, so it looks safe — our inference, not a vendor statement
siemens-simatic-mv440-sr (same device)
SIMATIC MV440 Ur Firmware· Siemens
95%
v < 7.0.6
Affected range stops below 7.0.6, so it looks safe — our inference, not a vendor statement
siemens-simatic-mv440-ur (same device)
SIMATIC MV400· Siemens
60%
All Versions < V7.0.6
SIMATIC MV420 SR-B· Siemensdevice
80%
All versions
SIMATIC MV420 SR-B Body· Siemensdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-599268.pdf

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-1285CWE-129

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card