Bosch Security Systems IP Cameras Improper Input Validation (CVE-2021-23853)

critical Tenable OT Security Plugin ID 505369

Synopsis

The remote OT asset is affected by a vulnerability.

Description

In Bosch IP cameras, improper validation of the HTTP header allows an attacker to inject arbitrary HTTP headers through crafted URLs.

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: Critical

ID: 505369

File Name: tenable_ot_boschsecuritysystems_CVE-2021-23853.nasl

Version: 1.2

Type: Remote

Family: Tenable.ot

Published: 6/17/2026

Updated: 6/18/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2021-23853

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:bosch:cpp7_firmware:-, cpe:/o:bosch:cpp6_firmware:-, cpe:/o:bosch:cpp4_firmware:-, cpe:/o:bosch:cpp7.3_firmware:-, cpe:/o:bosch:cpp13_firmware:-

Required KB Items: Tenable.ot/BoschSecuritySystems

Exploit Ease: No known exploits are available

Patch Publication Date: 6/9/2021

Vulnerability Publication Date: 6/9/2021

Reference Information

CVE: CVE-2021-23853

CWE: 20

Detections

Analytics