Bosch Security Systems (CVE-2021-23845)

high Tenable OT Security Plugin ID 501996

Synopsis

The remote OT asset is affected by a vulnerability.

Description

This vulnerability could allow an attacker to hijack a session while a user is logged in the configuration web page. This vulnerability was discovered by a security researcher in B426 and found during internal product tests in B426-CN/B429-CN, and B426-M and has been fixed already starting from version 3.08 on, which was released on June 2019.

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.

Plugin Details

Severity: High

ID: 501996

File Name: tenable_ot_boschsecuritysystems_CVE-2021-23845.nasl

Version: 1.2

Type: Remote

Family: Tenable.ot

Published: 2/14/2024

Updated: 6/19/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.15

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

CVSS Score Source: CVE-2021-23845

CVSS v3

Risk Factor: High

Base Score: 8.8

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

Vulnerability Information

CPE: cpe:/o:bosch:b426-cn_firmware, cpe:/o:bosch:b426-m_firmware, cpe:/o:bosch:b426_firmware

Required KB Items: Tenable.ot/BoschSecuritySystems

Exploit Ease: No known exploits are available

Patch Publication Date: 6/18/2021

Vulnerability Publication Date: 6/18/2021

Reference Information

CVE: CVE-2021-23845

CWE: 284

Detections

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