CVE-2021-23859: Bosch Access Easy Controller Firmware

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

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

Affected products

• Bosch Access Easy Controller Firmware: up to and including 2.9.1.0
• Bosch Access Professional Edition: up to and including 3.8.0
• Bosch Bosch Video Management System: up to and including 9.0; from 10.0, before 10.0.2 (fixed in 10.0.2); version 10.1 only; version 11.0 only
• Bosch Building Integration System: up to and including 4.9
• Bosch Video Recording Manager: up to and including 3.81; from 3.82, up to and including 3.82.0057; from 3.83, up to and including 3.83.0021; from 4.0, up to and including 4.00.0070
• Bosch Video Recording Manager Exporter: from 2.1, up to and including 2.10.0008

Published 2021-12-08. Last modified 2026-06-17.