ABB RTU500 series Cross-site Scripting (CVE-2023-5768)

medium Tenable OT Security Plugin ID 501846


The remote OT asset is affected by a vulnerability.


A vulnerability exists in the HCI IEC 60870-5-104 that affects the RTU500 series product versions listed below. Incomplete or wrong received APDU frame layout may cause blocking on link layer. Error reason was an endless blocking when reading incoming frames on link layer with wrong length information of APDU or delayed reception of data octets. Only communication link of affected HCI IEC 60870-5-104 is blocked. If attack sequence stops the communication to the previously attacked link gets normal again.

This plugin only works with Tenable.ot.
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Refer to the vendor advisory.

See Also

Plugin Details

Severity: Medium

ID: 501846

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 12/21/2023

Updated: 12/21/2023

Supported Sensors: Tenable OT Security

Risk Information


Risk Factor: Low

Score: 3.0


Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2023-5768


Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: cpe:/o:hitachienergy:rtu520_firmware:12, cpe:/o:hitachienergy:rtu520_firmware:13

Required KB Items: Tenable.ot/ABB

Exploit Ease: No known exploits are available

Patch Publication Date: 12/4/2023

Vulnerability Publication Date: 12/4/2023

Reference Information

CVE: CVE-2023-5768

CWE: 79