Siemens APOGEE and TALON (CVE-2022-45937)

medium Tenable OT Security Plugin ID 500748


The remote OT asset is affected by a vulnerability.


A vulnerability has been identified in APOGEE PXC Series (BACnet) (All versions < V3.5.5), APOGEE PXC Series (P2 Ethernet) (All versions < V2.8.20), TALON TC Series (BACnet) (All versions < V3.5.5). A low privilege authenticated attacker with network access to the integrated web server could download sensitive information from the device containing user account credentials.

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


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

Siemens has prepared a fix and recommends updating to the following:

- APOGEE PXC Series (BACnet): Update to version 3.5.5 or later
- APOGEE PXC Series (P2 Ethernet): Update to version 2.8.20 or later
- TALON TC Series (BACnet): Update to version 3.5.5 or later

As a general security measure, Siemens 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 following the recommendations in the product manuals. For more information, see Siemens Security Advisory SSA-180579 in HTML or CSAF.

See Also

Plugin Details

Severity: Medium

ID: 500748

Version: 1.4

Type: remote

Family: Tenable.ot

Published: 1/25/2023

Updated: 11/6/2023

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2022-45937


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:siemens:pxc00-e96.a_firmware, cpe:/o:siemens:pxc100-e96.a_firmware, cpe:/o:siemens:pxc16.2-pe.a_firmware, cpe:/o:siemens:pxc24.2-pe.a_firmware, cpe:/o:siemens:pxc24.2-pef.a_firmware, cpe:/o:siemens:pxc24.2-per.a_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-2022-45937