CVE-2021-23846
CVE-2021-23846 is a high-severity vulnerability in Bosch B426 Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-319.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (42nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-319
- Affected product: Bosch B426 Firmware
- Published:
- Last modified:
Description
When using http protocol, the user password is transmitted as a clear text parameter for which it is possible to be obtained by an attacker through a MITM attack. This will be fixed starting from Firmware version 3.11.5, which will be released on the 30th of June, 2021.
Frequently asked questions
- What is CVE-2021-23846?
- When using http protocol, the user password is transmitted as a clear text parameter for which it is possible to be obtained by an attacker through a MITM attack. This will be fixed starting from Firmware version 3.11.5, which will be released on the 30th of June, 2021.
- How severe is CVE-2021-23846?
- CVE-2021-23846 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-23846 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-23846?
- CVE-2021-23846 primarily affects Bosch B426 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2021-23846?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-23846 published?
- CVE-2021-23846 was published on 2021-06-18 and last updated on 2026-06-17.
References
Affected products (4)
- cpe:2.3:o:bosch:b426_firmware:03.01.0004:*:*:*:*:*:*:*
- cpe:2.3:o:bosch:b426_firmware:03.02.002:*:*:*:*:*:*:*
- cpe:2.3:o:bosch:b426_firmware:03.03.0009:*:*:*:*:*:*:*
- cpe:2.3:o:bosch:b426_firmware:03.05.0003:*:*:*:*:*:*:*
More vulnerabilities in Bosch B426 Firmware
- CVE-2021-23845 — High (CVSS 8.0): This vulnerability could allow an attacker to hijack a session while a user is logged in the configuration web page.…
All CVEs affecting Bosch B426 Firmware →
Other CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities
- CVE-2025-4378 — Critical (CVSS 10.0): Cleartext Transmission of Sensitive Information, Use of Hard-coded Credentials vulnerability in Ataturk University…
- CVE-2025-47419 — Critical (CVSS 10.0): Cleartext Transmission of Sensitive Information vulnerability in Crestron Automate VX allows Sniffing Network…
- CVE-2026-48902 — Critical (CVSS 9.8): The password and username reset features created plain http links for https connections if the "Force SSL" flag wasn't…
- CVE-2025-34271 — Critical (CVSS 9.8): Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when…
- CVE-2025-32880 — Critical (CVSS 9.8): An issue was discovered on COROS PACE 3 devices through 3.0808.0. It implements a function to connect the watch to a…
- CVE-2025-26199 — Critical (CVSS 9.8): CloudClassroom-PHP-Project v1.0 is affected by an insecure credential transmission vulnerability. The application…
Browse all CWE-319 (Cleartext Transmission of Sensitive Information) vulnerabilities →