CVE & CISA-KEV Catalog

CVE-2020-25241

HIGH
7.5
CVSS v3
NVD

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.

CWE-1285CWE-129

How to fix

Remediation Available
simatic mv420 sr-b body firmwareNVD
Affected:< 7.0.6Fixed in:7.0.6CVE-2020-25241derived from NVD
simatic mv420 sr-b firmwareNVD
Affected:< 7.0.6Fixed in:7.0.6CVE-2020-25241derived from NVD
simatic mv420 sr-p body firmwareNVD
Affected:< 7.0.6Fixed in:7.0.6CVE-2020-25241derived from NVD
simatic mv420 sr-p firmwareNVD
Affected:< 7.0.6Fixed in:7.0.6CVE-2020-25241derived from NVD
simatic mv440 hr firmwareNVD
Affected:< 7.0.6Fixed in:7.0.6CVE-2020-25241derived from NVD
simatic mv440 sr firmwareNVD
Affected:< 7.0.6Fixed in:7.0.6CVE-2020-25241derived from NVD
simatic mv440 ur firmwareNVD
Affected:< 7.0.6Fixed in:7.0.6CVE-2020-25241derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.03%probability of exploitation in 30 days
59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Vendor Advisory1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.