ABB CP635 HMI Lack of encryption or authenticity checks against firmware binary files (CVE-2019-7229)

high Tenable OT Security Plugin ID 500945


The remote OT asset is affected by a vulnerability.


The ABB CP635 HMI uses two different transmission methods to upgrade its firmware and its software components: Utilization of USB/SD Card to flash the device and Remote provisioning process via ABB Panel Builder 600 over FTP. Neither of these transmission methods implements any form of encryption or authenticity checks against the new firmware HMI software binary files.

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Refer to the vendor advisory.

See Also

Plugin Details

Severity: High

ID: 500945

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 3/29/2023

Updated: 9/20/2023

Risk Information


Risk Factor: High

Score: 7.3


Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.2

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

CVSS Score Source: CVE-2019-7229


Risk Factor: High

Base Score: 8.3

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: cpe:/o:abb:cp620-web_firmware, cpe:/o:abb:cp620_firmware, cpe:/o:abb:cp630-web_firmware, cpe:/o:abb:cp630_firmware, cpe:/o:abb:cp635-b_firmware, cpe:/o:abb:cp635-web_firmware, cpe:/o:abb:cp635_firmware

Required KB Items: Tenable.ot/ABB

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/24/2019

Vulnerability Publication Date: 6/24/2019

Reference Information

CVE: CVE-2019-7229

CWE: 494