CVE-2020-25166
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 · uneditedAn improper verification of the cryptographic signature of firmware updates of the B. Braun Melsungen AG SpaceCom Version L81/U61 and earlier, and the Data module compactplus Versions A10 and A11 allows attackers to generate valid firmware updates with arbitrary content that can be used to tamper with devices.
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 · high confidenceThe SpaceCom and Data module compactplus devices fail to properly verify cryptographic signatures on firmware updates, allowing attackers to craft malicious firmware packages that appear valid to the device's update mechanism. This enables arbitrary code execution through tampered firmware.
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= a10= a11<= l81CVSS 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
- None
- Integrity
- High
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
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 device model and typeLocate the device label or management interface to confirm the exact model: Bbraun Datamodule Compactplus or Bbraun SpacecomAffected if Device is not a Bbraun Compactplus or Spacecom product
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Check installed firmware version on CompactplusAccess the device's system information or firmware management interface to retrieve the current firmware versionAffected if Firmware version is exactly a10 or exactly a11
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Check installed firmware version on SpacecomAccess the device's system information or firmware management interface to retrieve the current firmware versionAffected if Firmware version is l81 or any version lower than l81 (l80, l70, etc.)
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Verify firmware update mechanism configurationExamine the device's update settings to confirm the firmware update feature is enabled and accessibleAffected if Firmware update functionality is available and exposed (the vulnerability only applies when the update mechanism can be invoked)
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Check for cryptographic signature validation statusReview device security settings or firmware update logs to determine whether cryptographic signature verification is being performed on firmware packagesAffected if Signature verification is disabled, bypassed, or not enforced on the device
The device is affected if it is a Bbraun Spacecom (version l81 or lower) or Datamodule Compactplus (version a10 or a11) with the firmware update mechanism accessible and signature verification not properly enforced.
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.
From vendor dataContact B. Braun Melsungen AG for patched firmware versions and apply available updates; until then, implement network segmentation and strict access controls around affected devices to limit exposure to attackers who could inject malicious firmware.
- Consultation6.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,048.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-25166 — 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-2020-25166 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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- 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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