CVE-2020-27266
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 · uneditedIn SOOIL Developments Co., Ltd Diabecare RS, AnyDana-i and AnyDana-A, a client-side control vulnerability in the insulin pump and its AnyDana-i and AnyDana-A mobile applications allows physically proximate attackers to bypass user authentication checks via Bluetooth Low Energy.
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 confidenceA client-side authentication bypass vulnerability in the AnyDana-i and AnyDana-A mobile applications and Diabecare RS insulin pump allows physically proximate attackers to bypass user authentication via Bluetooth Low Energy. The application relies on client-side controls that can be circumvented, enabling unauthorized access to insulin delivery functions.
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< 3.0< 3.0< 3.0CVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:A/AC:L/PR:N/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 device model and firmware versionConnect to the insulin pump (AnyDana-A, AnyDana-I, or Diabecare RS) via its management software or check the device display/menu for firmware version information. Alternatively, use BLE tools to query the device's GATT services for firmware version characteristics.Affected if The firmware version is below 3.0 on Sooil Anydana A, Anydana I, or Diabecare RS devices.
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Verify BLE pairing security configurationUse a BLE scanner or analyzer tool to examine the pairing process between the mobile application and the pump. Check whether the connection requires PIN/key exchange or relies solely on client-side validation without cryptographic verification.Affected if BLE pairing allows unauthenticated access or relies purely on client-side checks without strong session tokens.
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Inspect mobile app authentication flowReview the mobile application (AnyDana-i or AnyDana-A) network traffic and local storage to determine whether authentication tokens are validated server-side or checked locally within the app only.Affected if The application performs authentication locally without server-side verification of credentials or session validity.
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Check for authorized insulin delivery commandsTest whether BLE commands to modify insulin delivery settings (basal rates, bolus amounts) can be sent without a valid server-authenticated session. Use a BLE testing tool to inject delivery commands and observe if they execute without proper server validation.Affected if Insulin delivery functions are accessible via BLE without server-validated authentication.
A user is affected if their Sooil Anydana A, Anydana I, or Diabecare RS insulin pump runs firmware version below 3.0 and relies on client-side BLE authentication that can be bypassed.
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 data3.0
Implement server-side authentication and proper BLE pairing with strong, unique session tokens. The insulin pump firmware and mobile applications both require updates to enforce server-validated authentication and prevent client-side bypass.
- Consultation8.0 h
- Implementation40.0 h
- Testing24.0 h
- Review / QA12.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $23,296.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-27266 — 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-2020-27266 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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