Siemens (CVE-2022-46143)

low Tenable.ot Plugin ID 500789


The remote OT asset is affected by a vulnerability.


Affected devices do not check the TFTP blocksize correctly. This could allow an authenticated attacker to read from an uninitialized buffer that potentially contains previously allocated data.

This plugin only works with Tenable.ot.
Please visit for more information.


Refer to the vendor advisory.

See Also

Plugin Details

Severity: Low

ID: 500789

Version: 1.0

Type: remote

Family: Tenable.ot

Published: 1/25/2023

Updated: 1/25/2023

Risk Information


Risk Factor: Low

Score: 2.2


Risk Factor: Low

Base Score: 2.7

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

Vulnerability Information

CPE: cpe:/o:siemens:scalance_xf204-2ba_firmware:-, cpe:/o:siemens:scalance_xf204-2bca_dna_firmware:-, cpe:/o:siemens:scalance_xf204_dna_firmware:-, cpe:/o:siemens:scalance_xf204_firmware:-

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 12/13/2022

Vulnerability Publication Date: 12/13/2022

Reference Information

CVE: CVE-2022-46143

CWE: 1284