Siemens SCALANCE W1700 Improper Input Validation (CVE-2022-28328)

high Tenable OT Security Plugin ID 501044


The remote OT asset is affected by a vulnerability.


A vulnerability has been identified in SCALANCE W1788-1 M12 (All versions < V3.0.0), SCALANCE W1788-2 EEC M12 (All versions < V3.0.0), SCALANCE W1788-2 M12 (All versions < V3.0.0), SCALANCE W1788-2IA M12 (All versions < V3.0.0). Affected devices do not properly handle malformed Multicast LLC frames. This could allow an attacker to trigger a denial of service condition.

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The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at

Siemens recommends installing the following software updates to address these vulnerabilities.

- Update SCALANCE W1788-1 M12 to Version 3.0.0 or later
- Update SCALANCE W1788-2 EEC M12 to Version 3.0.0 or later
- Update SCALANCE W1788-2 M12 to Version 3.0.0 or later
- Update SCALANCE W1788-2IA M12 to Version 3.0.0 or later

As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and to follow the recommendations in the product manuals.

Additional information on Industrial Security by Siemens can be found at:

For additional information, please refer to Siemens Security Advisory SSA-392912

See Also

Plugin Details

Severity: High

ID: 501044

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 4/11/2023

Updated: 3/4/2024

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2022-28328


Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:siemens:scalance_w1788-1_m12_firmware, cpe:/o:siemens:scalance_w1788-2_eec_m12_firmware, cpe:/o:siemens:scalance_w1788-2_m12_firmware, cpe:/o:siemens:scalance_w1788-2ia_m12_firmware

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 4/12/2022

Vulnerability Publication Date: 4/12/2022

Reference Information

CVE: CVE-2022-28328

CWE: 20