CVE-2022-46833
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedUse of a Broken or Risky Cryptographic Algorithm in SICK RFU63x 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe SICK RFU63x firmware versions prior to v2.21 implement weak cryptographic algorithms in their SSH interface, allowing a low-privileged remote attacker to decrypt encrypted data if the user has configured the system to use weak cipher suites. The vulnerability stems from supporting deprecated or broken cryptographic algorithms in the SSH implementation.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 2.21< 2.21< 2.21< 2.21< 2.21< 2.21< 2.21< 2.21CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the RFU63x firmware versionAccess the device management interface or use the SICK configuration tool to retrieve the current firmware version. This is typically found in the device status or system information section of the web UI or via CLI command provided in device documentation.Affected if The firmware version displayed is less than 2.21 (for example, 2.20, 2.10, 1.x, etc.)
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Confirm the exact model variantVerify the specific RFU63x model number from the device label or system information. Models 04100, 04100s01, 04101, 04102, 04103, 04104, 04105, and 04106 are all affected if running firmware below v2.21.Affected if The model matches one of the listed variants and firmware version is below 2.21
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Inspect SSH service configurationLocate the SSH server configuration on the device. This is typically found in the network settings, security settings, or SSH service configuration section of the device management interface.Affected if The SSH configuration allows or defaults to weak or deprecated cipher suites (such as older encryption algorithms or key exchange methods)
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Verify cipher suite policyCheck if the SSH configuration explicitly requests or permits weak cryptographic algorithms. This may be labeled as cipher strength, allowed algorithms, or security level in the SSH settings.Affected if Weak cipher suites are enabled, configured, or selected in the SSH settings
The system is affected if the RFU63x firmware version is below 2.21 AND weak cipher suites are configured or enabled in the SSH settings.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped2.21
Update RFU63x firmware to v2.21 or later, and ensure SSH configurations do not request or allow weak cipher suites. Consult SICK customer support for the official patch and installation procedure.
Rfu630 firmware v2.21
- Contact your SICK customer support contact to request the firmware v2.21 update for your RFU63x device
- Obtain the patch and installation procedure from the SICK customer contact person
- Follow the provided installation procedure to update the RFU63x firmware to version 2.21 or later
- After updating, verify that the firmware version is correctly installed and the weak cipher suites are no longer in use on the SSH interface
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-46833 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-46833 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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