CVE-2021-23845

Name: CVE-2021-23845
Creator: NVD / NIST
Published: 2021-06-18T14:15:07.907+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.84%

Last modified Jun 17, 2026

CVE-2021-23845 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.84% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.84%

53.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Bosch	B426 Firmware	< 03.08
Bosch	B426-Cn Firmware	< 03.08
Bosch	B429-Cn Firmware	< 03.08
Bosch	B426-M Firmware	< 03.10

References

https://psirt.bosch.com/security-advisories/bosch-sa-196933-bt.htmlVendor Advisory
https://psirt.bosch.com/security-advisories/bosch-sa-196933-bt.htmlVendor Advisory

Timeline

Published: Jun 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23845?

How severe is CVE-2021-23845?

CVE-2021-23845 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.84% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23845?

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-2021-23845?

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

Scan your code now

Source: NVD / NIST