Detections
Analytics

BRAutomation Runtime Buffer Copy without Checking Size of Input (CVE-2021-22275)

high Tenable OT Security Plugin ID 503270

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Buffer Overflow vulnerability in B&R Automation Runtime webserver allows an unauthenticated network-based attacker to stop the cyclic program on the device and cause a denial of service.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

See Also

http://www.nessus.org/u?df5dc5b0

Plugin Details

Severity: High

ID: 503270

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 6/13/2025

Updated: 6/13/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

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

CVSS Score Source: CVE-2021-22275

CVSS v3

Risk Factor: High

Base Score: 8.6

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

Vulnerability Information

CPE: cpe:/a:br-automation:automation_runtime

Required KB Items: Tenable.ot/BRAutomation

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2022

Vulnerability Publication Date: 5/13/2022

Reference Information

CVE: CVE-2021-22275

CWE: 120