Cyber Resilience

CVE-2020-25241

High

Published: 15 March 2021

Published
15 March 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0039 60.4th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2020-25241 is a high-severity Improper Validation of Specified Index, Position, or Offset in Input (CWE-1285) vulnerability in Siemens Simatic Mv440 Sr Firmware. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 39.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

arbitrary TCP sessions.

CWE(s)
CWE-1285CWE-129

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

siemens
simatic mv440 sr firmware
≤ 7.0.6
siemens
simatic mv440 hr firmware
≤ 7.0.6
siemens
simatic mv440 ur firmware
≤ 7.0.6
siemens
simatic mv420 sr-b firmware
≤ 7.0.6
siemens
simatic mv420 sr-p firmware
≤ 7.0.6
siemens
simatic mv420 sr-b body firmware
≤ 7.0.6
siemens
simatic mv420 sr-p body firmware
≤ 7.0.6

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References