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CVE-2021-31889

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CVE-2021-31889

Published: Nov 9, 2021

Modified: Mar 11, 2025

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions < V0.5.0.0). Malformed TCP packets with a corrupted SACK option leads to Information Leaks and Denial-of-Service conditions. (FSMD-2021-0015)

VendorProductVersions

Siemens

Capital Embedded AR Classic 431-422

affected
0 - < *

Siemens

Capital Embedded AR Classic R20-11

affected
0 - < V2303

Siemens

PLUSCONTROL 1st Gen

affected
All versions

Siemens

SIMOTICS CONNECT 400

affected
All versions < V0.5.0.0

Weaknesses (CWE)

CWE-191

CVSS v3.1 Details

CVSS v3.1 Vector

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

References

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