CVE-2021-23859

Name: CVE-2021-23859
Creator: NVD / NIST
Published: 2021-12-08T22:15:08.413+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2021-23859 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An unauthenticated attacker is able to send a special HTTP request, that causes a service to crash. In case of a standalone VRM or BVMS with VRM installation this crash also opens the possibility to send further unauthenticated commands to the service. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

Description

An unauthenticated attacker is able to send a special HTTP request, that causes a service to crash. In case of a standalone VRM or BVMS with VRM installation this crash also opens the possibility to send further unauthenticated commands to the service. On some products the interface is only local accessible lowering the CVSS base score. For a list of modified CVSS scores, please see the official Bosch Advisory Appendix chapter Modified CVSS Scores for CVE-2021-23859

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.97%

57.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Bosch	Bosch Video Management System	<= 9.0
Bosch	Bosch Video Management System	>= 10.0, < 10.0.2
Bosch	Bosch Video Management System	10.1
Bosch	Bosch Video Management System	11.0
Bosch	Video Recording Manager	<= 3.81
Bosch	Video Recording Manager	>= 3.82, <= 3.82.0057
Bosch	Video Recording Manager	>= 3.83, <= 3.83.0021
Bosch	Video Recording Manager	>= 4.0, <= 4.00.0070
Bosch	Access Easy Controller Firmware	<= 2.9.1.0
Bosch	Access Professional Edition	<= 3.8.0
Bosch	Building Integration System	<= 4.9
Bosch	Video Recording Manager Exporter	>= 2.1, <= 2.10.0008

References

https://psirt.bosch.com/security-advisories/bosch-sa-043434-bt.htmlVendor Advisory
https://psirt.bosch.com/security-advisories/bosch-sa-043434-bt.htmlVendor Advisory

Timeline

Published: Dec 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23859?

How severe is CVE-2021-23859?

CVE-2021-23859 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23859?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23859?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST