ABB Improper Neutralization of Argument Delimiters in a Command (Argument Injection) in Wind River VxWorks (CVE-2019-12258)

high Tenable OT Security Plugin ID 501128


The remote OT asset is affected by a vulnerability.


Wind River is the provider of a real time operating system called VxWorks which is used in the embedded software of the PM 877 Controller. Wind River has announced security vulnerabilities in the VxWorks TCP/IP stack (IPnet) and management of memory block size (Bad Alloc).
The controller PM 877 is affected by vulnerabilities in the TCP/IP stack but it is not affected by the vulnerabilities related to memory management (Bad Alloc). All the associated vulnerabilities which impacted the PM 877 have been corrected. An attacker who successfully exploits these vulnerabilities could hijack existing TCP sessions to inject malformed packets or steal authenticated user session identifiers, resulting in corruptions of data, unauthorized disclosure of information, denial of service and data communications outage or even code execution. The vulnerabilities do not target any ABB products specifically, but potentially affect products that use the operating system.

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

Wind River has produced controls and patches to mitigate the reported vulnerabilities. To obtain patches, email [email protected] and indicate the VxWorks major version for which you need source patches.

For more detailed information on the vulnerabilities and the mitigating controls, please see the Wind River advisory at:

Additional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:

Rockwell Automation (login required) -

Xerox -

Dräger –

Schneider Electric –

See Also

Plugin Details

Severity: High

ID: 501128

Version: 1.8

Type: remote

Family: Tenable.ot

Published: 5/10/2023

Updated: 10/19/2023

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2019-12258


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:abb:pm877_firmware

Required KB Items: Tenable.ot/ABB

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/9/2019

Vulnerability Publication Date: 8/9/2019

Reference Information

CVE: CVE-2019-12258

CWE: 120