CVE-2025-12994
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 · uneditedMedtronic CareLink Network allows an unauthenticated remote attacker to initiate a request for security questions to an API endpoint that could be used to determine a valid user account. This issue affects CareLink Network: before December 4, 2025.
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 confidenceMedtronic CareLink Network contains an API endpoint that returns security questions without requiring authentication, allowing unauthenticated attackers to enumerate valid user accounts by observing different responses for existing versus non-existing users.
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< 2025-12-04CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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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Confirm Medtronic CareLink Network deploymentIdentify systems running the Medtronic CareLink Network application in your environment. Check installed software inventory or network scans for this specific product.Affected if Medtronic CareLink Network is present in the environment
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Check CareLink Network versionLocate the installed version of Medtronic CareLink Network through the application interface, system inventory, or administration console. Compare against the affected date threshold of 2025-12-04.Affected if Version is earlier than 2025-12-04 or version information cannot be located
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Identify the security question API endpointLocate the API endpoint that serves security questions. This is typically found in authentication or account recovery related paths. Review application documentation or network traffic to identify the specific endpoint URL.Affected if The endpoint exists and is accessible within the application
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Test endpoint authentication requirementSend a request to the security question API endpoint without providing any authentication credentials (such as session tokens, API keys, or login cookies). Observe whether the server returns a successful response with security question data.Affected if The endpoint returns security question data without requiring authentication
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Verify user enumeration response differenceSubmit requests to the endpoint using both a known-valid username/email and a random/non-existent username/email. Compare the HTTP status codes, response times, and response content between the two requests.Affected if The responses differ between existing and non-existing accounts (different status codes, different error messages, or different response content)
A user is affected if they have Medtronic CareLink Network version before 2025-12-04 with the security question API endpoint accessible without authentication and returning different responses for existing versus non-existing user accounts.
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 · scoped2025-12-04
Implement proper authentication on the affected API endpoint, enforce rate limiting to prevent automated enumeration, and ensure uniform responses (timing and content) regardless of whether the account exists.
CareLink Network version 2025-12-04 or later
- 1. Verify current CareLink Network version through the administrative console or system documentation
- 2. Contact Medtronic customer support or access the Medtronic CareLink portal to obtain the updated version released on or after December 4, 2025
- 3. Schedule a maintenance window following organizational change management procedures
- 4. Backup all CareLink Network configuration data and user settings before applying the update
- 5. Apply the CareLink Network update (version 2025-12-04 or later) following Medtronic's installation documentation
- 6. Verify the fix by attempting the vulnerable API endpoint - it should no longer return distinguishable responses for valid vs invalid usernames
- 7. Monitor system logs for any anomalous access patterns to the security questions API endpoint
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-12994 — 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-2025-12994 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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- Version or environment caveats, and links to real fixes
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