CVE-2021-23842

Use of Hard-coded Cryptographic Key

Description

Communication to the AMC2 uses a state-of-the-art cryptographic algorithm for symmetric encryption called Blowfish. An attacker could retrieve the key from the firmware to decrypt network traffic between the AMC2 and the host system. Thus, an attacker can exploit this vulnerability to decrypt and modify network traffic, decrypt and further investigate the device\'s firmware file, and change the device configuration. The attacker needs to have access to the local network, typically even the same subnet.

Categories

5.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory bosch.com
Affected: Bosch AMS
Affected: Bosch APE
Affected: Bosch BIS
Affected: Bosch AMC2
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-23842?
CVE-2021-23842 has been scored as a medium severity vulnerability.
How to fix CVE-2021-23842?
To fix CVE-2021-23842, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-23842 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-23842 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-23842?
CVE-2021-23842 affects Bosch AMS, Bosch APE, Bosch BIS, Bosch AMC2.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.